Question 12 Marks
Will this method work if the units digit is 0? What do you think? What other methods can you use to find the missing number to fill in the blanks? Share your thoughts in the class.
400 + ________ = 1,000
400 + ________ = 1,000
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Question 22 Marks
Will this method work if the units digit is 0? What do you think? What other methods can you use to find the missing number to fill in the blanks? Share your thoughts in the class.
760 + ________ = 1,000
760 + ________ = 1,000
Question 32 Marks
Will this method work if the units digit is 0? What do you think? What other methods can you use to find the missing number to fill in the blanks? Share your thoughts in the class.
180 + ________ = 1,000
180 + ________ = 1,000
Question 42 Marks
Sukanta likes the numbers 10, 100, 1,000, and 10,000. He wants to figure out what number he should add to a given number such that the sum is 100 or 1,000. Help him fill in the blanks with an appropriate number.
59 + _____ = 100
59 + _____ = 100
Question 52 Marks
Namita likes the number 9. She wants to subtract 9 or 99 from any number. Find a way to quickly subtract 9 or 99 from any number.
763 – 99 = _____
763 – 99 = _____
Question 62 Marks
Namita likes the number 9. She wants to subtract 9 or 99 from any number. Find a way to quickly subtract 9 or 99 from any number.
247 – 99 = _____
247 – 99 = _____
Question 72 Marks
Namita likes the number 9. She wants to subtract 9 or 99 from any number. Find a way to quickly subtract 9 or 99 from any number.
187 – 99 = _____
187 – 99 = _____
Question 82 Marks
Namita likes the number 9. She wants to subtract 9 or 99 from any number. Find a way to quickly subtract 9 or 99 from any number.
144 – 9 = _____
144 – 9 = _____
Question 92 Marks
Namita likes the number 9. She wants to subtract 9 or 99 from any number. Find a way to quickly subtract 9 or 99 from any number.
83 – 9 = _____
83 – 9 = _____
Question 102 Marks
Namita likes the number 9. She wants to subtract 9 or 99 from any number. Find a way to quickly subtract 9 or 99 from any number.
67 – 9 = _____
67 – 9 = _____
Question 112 Marks
What will be the difference between two successive sums for-
6 consecutive numbers
6 consecutive numbers
Answer
View full question & answer→1 + 2 + 3 + 4 + 5 + 6 = 21
2 + 3 + 4 + 5 + 6 + 7 = 27
3 + 4 + 5 + 6 + 7 + 8 = 33
Difference between two successive sums:
27 – 21 = 33 – 27 = 39 – 33 = 6.
So, the difference is 6.
2 + 3 + 4 + 5 + 6 + 7 = 27
3 + 4 + 5 + 6 + 7 + 8 = 33
Difference between two successive sums:
27 – 21 = 33 – 27 = 39 – 33 = 6.
So, the difference is 6.
Question 122 Marks
What will be the difference between two successive sums for-
5 consecutive numbers
5 consecutive numbers
Answer
View full question & answer→1 + 2 + 3 + 4 + 5 = 15
2 + 3 + 4 + 5 + 6 = 20
3 + 4 + 5 + 6 + 7 = 25
Difference between two successive sums:
20 – 15 = 25 – 20 = 5
So, the difference is 5.
2 + 3 + 4 + 5 + 6 = 20
3 + 4 + 5 + 6 + 7 = 25
Difference between two successive sums:
20 – 15 = 25 – 20 = 5
So, the difference is 5.
Question 132 Marks
Circle the numbers that are even.
(a) 297
(b) 498
(c) 724
(d) 100
(e) 199
(f) 789
(g) 49
(h) 6,893
(i) 846
(j) 111
(k) 222
(l) 1,023
(a) 297
(b) 498
(c) 724
(d) 100
(e) 199
(f) 789
(g) 49
(h) 6,893
(i) 846
(j) 111
(k) 222
(l) 1,023
Answer
View full question & answer→(b) 498
(c) 724
(d) 100
(i) 846
(k) 222
(c) 724
(d) 100
(i) 846
(k) 222
Question 142 Marks
Find 2 numbers among 5,205, 6,220, 7,095, 8,455, and 4,840 whose sum is closest to the following.
16000
16000
Answer
View full question & answer→7,095 + 8,455 = 15,550
This sum is closest to 16,000 and all other possible combinations give sums that are much lower than 16,000.
This sum is closest to 16,000 and all other possible combinations give sums that are much lower than 16,000.
Question 152 Marks
Find 2 numbers among 5,205, 6,220, 7,095, 8,455, and 4,840 whose sum is closest to the following.
13000
13000
Answer
View full question & answer→8,455 + 4,840 = 13,295
This sum is closest to 13,000 and all other possible combinations give sums that are much higher or much lower than 13,000.
This sum is closest to 13,000 and all other possible combinations give sums that are much higher or much lower than 13,000.
Question 162 Marks
Find 2 numbers among 5,205, 6,220, 7,095, 8,455, and 4,840 whose sum is closest to the following.
15000
15000
Answer
View full question & answer→6,220 + 8,455 = 14,675
This sum is closest to 15,000 and all other possible and combinations give sums that are much higher or much lower than 15,000.
This sum is closest to 15,000 and all other possible and combinations give sums that are much higher or much lower than 15,000.
Question 172 Marks
Find 2 numbers among 5,205, 6,220, 7,095, 8,455, and 4,840 whose sum is closest to the following.
10000
10000
Answer
View full question & answer→5,205 + 4,840 = 10,045
This sum is closest to 10,000 and all other possible combinations give sums that are much higher than 10,000.
This sum is closest to 10,000 and all other possible combinations give sums that are much higher than 10,000.
Question 182 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 872 – 672 = 200, then,
872 – _______ = 672.
If 872 – 672 = 200, then,
872 – _______ = 672.
Answer
View full question & answer→872 – 200 = 672.
Question 192 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 872 – 672 = 200, then,
200 + _______ = 872.
If 872 – 672 = 200, then,
200 + _______ = 872.
Answer
View full question & answer→200 + 672 = 872.
Question 202 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 189 + 98 = 287, then,
287 – 189 = _______.
If 189 + 98 = 287, then,
287 – 189 = _______.
Answer
View full question & answer→287 – 189 = 98.
Question 212 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 189 + 98 = 287, then,
287 – 98 = _______.
If 189 + 98 = 287, then,
287 – 98 = _______.
Answer
View full question & answer→287 – 98 = 189.
Question 222 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 198 – 98 = 100, then,
198 – _______ = 98.
If 198 – 98 = 100, then,
198 – _______ = 98.
Answer
View full question & answer→198 – 100 = 98.
Question 232 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 198 – 98 = 100, then,
100 + _______ = 198.
If 198 – 98 = 100, then,
100 + _______ = 198.
Answer
View full question & answer→100 + 98 = 198.
Question 242 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 46 + 21 = 67, then,
67 – 46 = _______.
If 46 + 21 = 67, then,
67 – 46 = _______.
Answer
View full question & answer→67 - 46 = 21.
Question 252 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
If 46 + 21 = 67, then,
67 – 21 = _______.
If 46 + 21 = 67, then,
67 – 21 = _______.
Answer
View full question & answer→67 - 21 = 46.
Question 262 Marks
Interchange pairs of numbers between the two groups to make their sums equal. Try to do this using the least number of moves.
Answer
View full question & answer→self
Question 272 Marks
Interchange pairs of numbers between the two groups to make their sums equal. Try to do this using the least number of moves.
Answer
View full question & answer→Difference between two sums
$=76-68=8$
So, interchange 1113 and $15 \leftrightarrow 17$ to get the sum on both sides 72 .
$=76-68=8$
So, interchange 1113 and $15 \leftrightarrow 17$ to get the sum on both sides 72 .
Question 282 Marks
Interchange pairs of numbers between the two groups to make their sums equal. Try to do this using the least number of moves.
Answer
View full question & answer→Sum of the numbers on the left side $=5+7+12+15=39$
Sum of the numbers on the right side $=9+11+13+14=47$
Difference of the sums $=47-39=8$
So, we need to interchange the numbers so that the left side increases by 4 and the right side decreases by 4 .
So, interchange 7 and 11.
Then, the sum of left side
$=5+11+12+15=43$ and the sum of right side
$=9+7+13+14=43$
Sum of the numbers on the right side $=9+11+13+14=47$
Difference of the sums $=47-39=8$
So, we need to interchange the numbers so that the left side increases by 4 and the right side decreases by 4 .
So, interchange 7 and 11.
Then, the sum of left side
$=5+11+12+15=43$ and the sum of right side
$=9+7+13+14=43$
Question 292 Marks
Interchange pairs of numbers between the two groups to make their sums equal. Try to do this using the least number of moves.
Answer
View full question & answer→Sum of the numbers on the left side $=1+2+7+9=19$
Sum of the numbers on the right side $=3+4+5+9=21$
Difference of the sums $=21-19=2$
So, we need to interchange the numbers so that the left side increases by 1 and the right side decreases by 1 .
So, interchange 2 and 3 .
Then, the sum of left side $=1+3+7+9=20$ and the sum of right side $=2+4+5+9=20$
Sum of the numbers on the right side $=3+4+5+9=21$
Difference of the sums $=21-19=2$
So, we need to interchange the numbers so that the left side increases by 1 and the right side decreases by 1 .
So, interchange 2 and 3 .
Then, the sum of left side $=1+3+7+9=20$ and the sum of right side $=2+4+5+9=20$
Question 302 Marks
Subtract the following without writing place value heading. Align digit carefully.
16,004 - 789
16,004 - 789
Answer
View full question & answer→15,215
Question 312 Marks
Subtract the following without writing place value heading. Align digit carefully.
56,789 - 7,654
56,789 - 7,654
Answer
View full question & answer→49,135
Question 322 Marks
Subtract the following without writing place value heading. Align digit carefully.
9,325 - 2,418
9,325 - 2,418
Answer
View full question & answer→6,907
Question 332 Marks
Subtract the following without writing place value heading. Align digit carefully.
6,608 - 3,496
6,608 - 3,496
Answer
View full question & answer→3,112
Question 342 Marks
Subtract the following without writing place value heading. Align digit carefully.
7,845 - 4,327
7,845 - 4,327
Answer
View full question & answer→3,518
Question 352 Marks
Find two numbers from the given set whose sum is closest to the target sum.
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 16,000
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 16,000
Answer
View full question & answer→7,410 ; 9,050
Question 362 Marks
Find two numbers from the given set whose sum is closest to the target sum.
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 14,000
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 14,000
Answer
View full question & answer→6,890 ; 7,410
Question 372 Marks
Find two numbers from the given set whose sum is closest to the target sum.
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 12,000
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 12,000
Answer
View full question & answer→6,890 ; 4,250
Question 382 Marks
Find two numbers from the given set whose sum is closest to the target sum.
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 10,000
Numbers set: 4,250 ; 5,975 ; 6,890 ; 7,410 ; 9,050
Closest to 10,000
Answer
View full question & answer→4,250 ; 5,975
Question 392 Marks
Find the following sum.
9,876 + 23,456
9,876 + 23,456
Answer
View full question & answer→33,332
Question 402 Marks
Find the following sum.
18,745 + 23,456
18,745 + 23,456
Answer
View full question & answer→4,2201
Question 412 Marks
Find the following sum.
3,245 + 4,678
3,245 + 4,678
Answer
View full question & answer→7,923
Question 422 Marks
Find the following sum.
867 + 438
867 + 438
Answer
View full question & answer→1,305
Question 432 Marks
Find the following sum.
452 + 789
452 + 789
Answer
View full question & answer→1,241
Question 442 Marks
write the subtraction and addition sentences that follow from the given sentence.
lf 132 + 468 = 600, then,
________________ and ________________
lf 132 + 468 = 600, then,
________________ and ________________
Answer
View full question & answer→600 - 468 = 132, 600 - 132 = 468
Question 452 Marks
write the subtraction and addition sentences that follow from the given sentence.
lf 812 - 328 = 484, then,
________________ and ________________
lf 812 - 328 = 484, then,
________________ and ________________
Answer
View full question & answer→484 + 328 = 812, 812 - 484 = 328
Question 462 Marks
write the subtraction and addition sentences that follow from the given sentence.
lf 950 - 465 = 485, then,
________________ and ________________
lf 950 - 465 = 485, then,
________________ and ________________
Answer
View full question & answer→465 + 485 = 950, 950 - 485 = 465
Question 472 Marks
write the subtraction and addition sentences that follow from the given sentence.
lf 637 + 285 = 922, then,
________________ and ________________
lf 637 + 285 = 922, then,
________________ and ________________
Answer
View full question & answer→922 - 285 = 637, 922 - 637 = 285
Question 482 Marks
write the subtraction and addition sentences that follow from the given sentence.
lf 124 + 256 = 380, then,
________________ and ________________
lf 124 + 256 = 380, then,
________________ and ________________
Answer
View full question & answer→380 - 256 = 124, 380 - 124 = 256
Question 492 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
lf 65 + 27 = 92, then,
92 - 27 = _____________$\quad$$\quad$and$\quad$$\quad$92 - 65 = _____________
lf 65 + 27 = 92, then,
92 - 27 = _____________$\quad$$\quad$and$\quad$$\quad$92 - 65 = _____________
Answer
View full question & answer→65 ; 27
Question 502 Marks
Find the relationship between the numbers in the given statements and fill in the blanks appropriately.
lf 900 - 675 = 225, then,
225 + _____________ = 900$\quad$$\quad$and$\quad$$\quad$900 - _____________ = 675
lf 900 - 675 = 225, then,
225 + _____________ = 900$\quad$$\quad$and$\quad$$\quad$900 - _____________ = 675
Answer
View full question & answer→675 ; 225