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Question 11 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:The whole number $1$ has no predecessor.
Answer
False.
The predecessor of $1$ is $0$.
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Question 21 Mark
Fill in the blanks to make the following a true statement:
$864 + 2006 = 2006 +$ ____________.
Answer
$864 + 2006 = 2006 +$ 864.
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Question 41 Mark
State the property used in the following statements: $1480 \times 1 = 1480$
Answer
Multiplicative identity.
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Question 51 Mark
Fill in the blanks: Product of two odd numbers is an ________________ number.
Answer
Product of two odd numbers is an odd number.
Example: $5 \times 7 = 35$, which is an odd number.
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Question 61 Mark
State the property used in the following statements:
$(29 \times 36) \times 18 = 29 \times (36 \times 18)$
Answer
Associatively of multiplication.
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Question 81 Mark
Replace each * by the correct digit in the following:
$\ \ \ \ \ \ 9\ 1\ 7\\ \underline{-\ *\ 5\ *\ }\\\ \ \ \ \ 5\ *\ 8$
Answer
$\ \ \ 917\\ \underline{– 359\ }\\\underline{\ \ \ 558\ }$
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Question 91 Mark
Fill in the blanks to make the following a true statement:
$59 \times 66 + 59 \times 34 = 59 \times $ (_____ + _____)
Answer
$59 \times 66 + 59 \times 34 = 59 \times $ (66 + 34)
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Question 111 Mark
Find the value of:
$32277 ÷ (648 - 39)$
Answer
$32277 ÷ (648 - 39)$ (Following $BODMAS$ property)
$= 32277 ÷ (609)$
$= 53$
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Question 121 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:$500$ is the predecessor of $499.$
Answer
False.
$500$ is the successor of $501.$
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Question 131 Mark
Fill in the blanks to make the following a true statement:
$53501 + (574 + 799) = 574 + (53501 +$ _______$)$
Answer
$53501 + (574 + 799) = 574 + (53501 +$ 799$)$
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Question 141 Mark
Replace each * by the correct digit in the following: $\ 6\ 1\ 7\ 2\\ \underline{*\ *\ 6\ 9}\\2\ 9\ *\ *$
Answer
$\ \ \ \ 6172\\ \underline{-\ 3569}\\ \underline{\ \ \ \ 2903}$
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Question 161 Mark
Perform the following subtractions. Check your result by the corresponding additions. $100000 - 78987$
Answer
Subtraction: $100000 - 78987 = 21013$ Addition: $21013 + 78987 = 100000$
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Question 181 Mark
Find the whole number $n$ when: $n - 20568 = 21403$
Answer
$n - 20568 = 21403 $
$\Rightarrow n = 21403 + 20568 = 41971$
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Question 201 Mark
Fill in the blanks to make the following a true statement:$1946 +$ ___________ $= 984 + 1946$
Answer
$1946 +$ 984 $= 984 + 1946$
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Question 211 Mark
Fill in the blanks to make the following a true statement: $286 \times 753 = _____ \times 286$
Answer
$286 \times 753 =$ 753 $\times 286$
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Question 231 Mark
Fill in the blanks to make the following a true statement: $246 \times 1 =$ _____________.
Answer
$246 \times 1 =$ 246.
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Question 261 Mark
Fill in the blanks to make the following a true statement:
$13 \times 100\ \times $_____ $= 1300000$
Answer
$13 \times 100\ \times $ 1000 $= 1300000$
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Question 271 Mark
Perform the following subtractions. Check your result by the corresponding additions. $6237 - 694$
Answer
Subtraction: $6237 - 694 = 5543$
Addition: $5543 + 694 = 6237$
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Question 281 Mark
State the property used in the following statements: $63 \times 126 - 63 \times 26 = 63 \times (126 - 26)$
Answer
Distributive law of multiplication over subtraction.
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Question 301 Mark
Fill in the blanks to make the following a true statement: $458 + 639 = 639 +$ ________.
Answer
$458 + 639 = 639 +$ 458.
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Question 321 Mark
Write $(T)$ for true and $(F)$ for false for the following statements: The sum of an even number and an odd number is an odd number.
Answer
True.
The sum of an even and an odd number is an odd number.
Example: $5 + 4 = 9$, which is an odd number.
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Question 341 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:The successor of a two-digit number is always a two-digit number.
Answer
False.
The successor of two-digit number will be a also three digit-number. If it is $99$.
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Question 351 Mark
Find the value of: $981 + 5720 ÷ 10$
Answer
$981 + 5720 ÷ 10 $
$= 981 + (5720 ÷ 10)$ $($Following $DMAS$ property$)$
$= 981 + 572 = 1553$
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Question 371 Mark
Write $(T)$ for true and $(F)$ for false against the following statements: Zero is the smallest natural number.
Answer
False.
$1$ is smallest natural number.
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Question 381 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:
Zero is the smallest whole number.
Answer
True.
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Question 391 Mark
Replace each * by the correct digit in the following: $1\ 0\ 0\ 0\ 0\ 0\ 0\\ \underline{-\ \ ****\ 1\ }\\ \ \ *7\ 0\ 4\ 2\ *$
Answer
$1000000\\ \underline{-29571} \\\underline{\ \ \ 70429}$
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Question 401 Mark
Find the value of: $(1573 ÷ 1573) - (1573 ÷ 1573)$
Answer
$(1573 ÷ 1573) - (1573 ÷ 1573)$ (Following $BODMAS$ property)
$= 1 - 1 = 0$
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Question 421 Mark
Find the products: $\ \ 3709\\\underline{\times\ \ 89\ }\\\underline{\ \ \ \ \ \ \ \ \ \ }$
Answer
$\ \ \ 3709\\\underline{\ \times\ 89\ \ }\\\underline{\ 330101}$
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Question 451 Mark
Write $'T'$ for true and $'F'$ for false in the following:
Every whole number is a natural number.
Answer
False.
$0$ is a whole number but not a natural number.
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Question 491 Mark
State the property used in the following statements: $16 \times 32$ is a whole number.
Answer
Closure property.
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Question 501 Mark
Perform the following subtractions. Check your result by the corresponding additions.
$21205 - 10899$
Answer
Subtraction: $21205 - 10899 = 10306$
Addition: $10306 + 10899 = 21205$
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Question 511 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:Every natural number is a whole number.
Answer
True.
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Question 541 Mark
Fill in the blanks to make the following a true statement: $1369 \times 0 =$ ________________.
Answer
$1369 \times 0 =$ 0.
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Question 551 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:The whole number $0$ has no predecessor.
Answer
True.
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Question 561 Mark
Fill in the blanks:
______________ is a whole number which is not a natural number.
Answer
0 is a whole number which is not a natural number.
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Question 571 Mark
Write $(T)$ for true and $(F)$ for false for the following statements: The sum of two even numbers is an even number.
Answer
True.
The sum of two even numbers is an even number.
Example: $2 + 4 = 6$, which is an even number.
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Question 581 Mark
Fill in the blanks:
______________ is the multiplicative identity for whole numbers.
Answer
1 is the multiplicative identity for whole numbers.
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Question 591 Mark
Write $'T'$ for true and $'F'$ for false in the following:
$1$ has no predecessor in whole numbers.
Answer
False.
$1 - 1 = 0$ is a predecessor of $1$, which is a whole number.
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Question 621 Mark
Fill in the blanks:
$\text{a}\ne 0 \text{ and a} \times\text{a} = \text{a} \Rightarrow\text{a} =\ ?$
Answer
$\text{a}\ne 0 \text{ and a} \times\text{a} = \text{a} \Rightarrow\text{a} =\ \text{a}$
Given: $a \times a = a$
$\Rightarrow\text{a}=\frac{\text{a}}{\text{a}}=1,\text{a}\ne0$
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Question 631 Mark
How many whole numbers are there between $1064$ and $1201$?
Answer
Number of whole numbers between $1201$ and $1064 = (1201 - 1064) - 1 = 137 - 1 = 136$
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Question 641 Mark
Find the products:
$ \ 15208\\\underline{\times\ 542\ }\\\underline{\ \ \ \ \ \ \ \ \ \ \ }$
Answer
$\ \ \ \ \ 15208\\\underline{\ \ \ \times\ 542\ }\\\underline{\ 8242736\ }$
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Question 651 Mark
Find the value of: $1507 - (625 ÷ 25)$
Answer
$1507 - (625 ÷ 25)$ (Following $BODMAS$ property)
$= 1507 - 25 = 1482$
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Question 671 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:$1$ is the smallest whole number.
Answer
False.
$0$ is the smallest whole number.
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Question 681 Mark
Fill in the blanks:
Sum of two odd numbers is an ____________ number.
Answer
Sum of two odd numbers is an even number.
Example: $3 + 5 = 8$, which is an even number.
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Question 691 Mark
Fill in the blanks to make the following a true statement: $38 \times (91 \times 37) = _____ \times (38 \times 37)$
Answer
$38 \times (91 \times 37) =$ 91$ \times (38 \times 37)$
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Question 701 Mark
Fill in the blanks to make the following a true statement: $68 \times 95 = 68 \times 100 - 68$ _____.
Answer
$68 \times 95 = 68 \times 100 - 68 \times $ 5.
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Question 711 Mark
State the property used in the following statements: $19 \times 17 = 17 \times 19$
Answer
Commutative law in multiplication.
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Question 731 Mark
State the property used in the following statements: $72 \times 98 + 72 \times 2 = 72 \times (98 + 2)$
Answer
Distributive law of multiplication over addition.
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Question 741 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:$7000$ is the successor of $6999.$
Answer
True.
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Question 751 Mark
Write $(T)$ for true and $(F)$ for false for the following statements: The sum of two odd numbers is an odd number.
Answer
False.
The sum of two odd numbers may not be an odd number.
Example: $3 + 5 = 8,$ which is an even number.
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Question 771 Mark
Replace each * by the correct digit in the following: $\ \ \ 5\ 0\ 0\ 1\ 0\ 0\ 3\\ \underline{-\ \ **\ 6\ 9\ 8\ 7}\\ \ \ 4\ \ 8\ 4 * * * *$
Answer
$\ \ \ 5001003\\ \underline{-\ 155987}\\ \underline{\ \ 4845016}$
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Question 781 Mark
Write $'T'$ for true and $'F'$ for false in the following:
Every natural number is a whole number.
Answer
True.
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Question 791 Mark
Fill in the blanks to make the following a true statement: $8063 + 0 =$ ____________.
Answer
$8063 + 0 = 0 +$ 8063
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Question 801 Mark
Find the difference: $13006 - 9999$
Answer
$13006 - 9999 $
$= 13006 - 10000 + 1 $
$= 13007 - 10000 $
$= 3007$
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Question 811 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:The natural number $1$ has no predecessor.
Answer
True.
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Question 821 Mark
Find the products:
$\ 458\\\underline{\times67\ }\\\underline{\ \ \ \ \ \ \ \ }$
Answer
$\ \ \ \ \ \ 458\\\underline{\ \times\ 67}\\\underline{\ 30686}$
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Question 841 Mark
Write $'T'$ for true and $'F'$ for false in the following:
$0$ is the smallest natural number.
Answer
False.
$0$ is not a natural number.
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Question 851 Mark
Find the products: $\ \ 4617\\\underline{\times\ 234\ }\\\underline{\ \ \ \ \ \ \ \ \ \ \ }$
Answer
$\ \ \ \ \ 4617\\\underline{\ \times\ 234\ \ }\\\underline{\ 1080378}$
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Question 871 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:Every whole number is a natural number.
Answer
False.
Natural numbers together with $‘0’$ are called whole number.
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Question 891 Mark
Fill in the blanks.$\ \ \ 1000000\\\underline{-****\ 1}\\\underline{\ \ \ \ *7042* }$
Answer
$\ \ \ 1000000\\\underline{-****\ 1}\\\underline{\ \ \ \ *7042* }$ Then, we have: $\ \ 1000000\\\underline{-\ 295711}\\\underline{\ \ \ \ 970429}$
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Question 901 Mark
Perform the following subtractions. Check your result by the corresponding additions. $1010101 - 656565$
Answer
Subtraction:
$1010101 - 656565 = 353536$
Addition:
$353536 + 656565 = 1010101$
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Question 911 Mark
Fill in the blanks to make the following a true statement:
$593 \times 188 = 188\ \times $ _____________.
Answer
$593 \times 188 = 188\ \times $ 593.
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Question 931 Mark
Which is the smallest whole number?
Answer
$0$ (zero) is the smallest whole number. All the natural numbers along with $0$ are called whole numbers.
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Question 951 Mark
Write $(T)$ for true and $(F)$ for false against the following statements:The predecessor of a two-digit number is never a single-digit number.
Answer
False.
The predecessor of $10$ is $9$. Which is single-digit number.
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