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Question 41 Mark
Simplify:
1056 + (-798) + (-38) + 44 + (-1)
Answer
1056 + (-798) + (-38) + 44 + (-1)
= 1056 + 44 – (798 + 38 + 1)
= 1100 – 837
= -263
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Question 71 Mark
Indicate the following using ' + ' or ' - ' sign:
$7^{\circ} C$ Below the freezing point
Answer
$-7^{\circ} C$
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Question 81 Mark
Simplify:
(-36) × (72) + (-36) × 28
Answer
(-36) × (72) + (-36) × 28
= (-2592) + (-1008)
= -2592 - 1008
= -3600
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Question 101 Mark
Add -36 to the difference of -8 and -68.
Answer
= -8 - (-68) + (-36)
= -8 + 68 - 36
= 68 - (8 + 36)
= 68 - 44
= 24
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Question 111 Mark
Add:
$\ -493\\ \underline{\ +289\ } \\\underline{\ \ \ \ \ \ \ \ \ \ \ \ \ }$
Answer
$\ -493\\ \underline{\ +289\ } \\\underline{\ -204\ \ }$
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Question 121 Mark
Fill in the blank.
The smallest positive integer is ____.
Answer
The smallest positive integer is 1.Solution:
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Question 161 Mark
Find the sum of:
-51, -203, 36 and -28
Answer
(-51) + (-203) + 36 + (-28)
= -51 – 203 + 36 – 28
= -282 + 36
= -246
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Question 171 Mark
Evaluate:
(-40) ÷ (-10)
Answer
$(-40)\div(-10)$
$=\frac{-40}{-10}$
$=\frac{(-1)\times40}{(-1)\times10}$
$=4$
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Question 221 Mark
Use convenient groupings and find the values of:
(-8) × (-63) × 9
Answer
(-8) × (-63) × 9
= (-8) × (-567)
= 4536
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Question 241 Mark
Which number is smaller the following pairs?
-13, -27
Answer
-27 < -13
Since 27 is greater than 13, -27 is smaller than -13.
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Question 261 Mark
In the pairs given below, find the larger integer.
-4, -6
Answer
-4, -6
-4
Since 6 is greater than 4, -4 is greater than -6.
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Question 311 Mark
Write the following integers in the decreasing order:
-365, -515, 102, 413, -7
Answer
413 > 102 > -7 > -365 > -515
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Question 351 Mark
Write the following integers in the increasing order:
21, -106, -16, 16, 0, -2, -81
Answer
-106 < -81 < -16 < -2 < 0 < 16 < 21
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Question 371 Mark
Write the opposite of the following: $5^{\circ} C$ below the freezing point
Answer
$5^{\circ} C$ above freezing point
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Question 401 Mark
Write the following integers in the increasing order:
-23, 12, 0, -6, -100, -1
Answer
-100 < -23 < -6 < -1 < 0 < 12
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Question 411 Mark
Add:
$-\ 365\\ \underline{\ -87\ } \\\underline{\ \ \ \ \ \ \ \ \ \ \ }$
Answer
$-\ 365\\\underline{\ -87}\\ \underline{-\ 452\ }$
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Question 481 Mark
Add:
$-\ 1065\\ \underline{\ -987\ }\\ \underline{\ \ \ \ \ \ \ \ \ \ \ \ \ }$
Answer
$-\ 1065\\ \underline{\ -987\ }\\ \underline{-\ 2052\ }$
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Question 501 Mark
Write four integers less than -6 and four integers greater than -6.
Answer
Four integers less than -6 (i.e. four negative integers that lie to the left of -6) are -7, -8, -9 and -10.
Four integers greater than -6 (i.e. four negative integers that lie to the right of -6 ) are -5, -4, -3 and -2.
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1 Mark Question - Maths STD 6 Questions - Vidyadip