Questions · Page 3 of 4

1 Marks Question

Question 1071 Mark
Which number is smaller the following pairs?
$0, -1$
Answer
$-1 < 0$
This is because zero is greater than every negative integer.
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Question 1111 Mark
Which number is smaller the following pairs? $-777, 7$
Answer
$777 < 7$ This is because every positive integer is greater than every negative integer.
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Question 1141 Mark
Fill in the blank.
$-23 - (?) = 15$
Answer
$-23 -$ (38) $= 15$
Let the required number be $x -23 - x = 15 $
$\Rightarrow -23 = 15 + x $
$\Rightarrow 15 + x = -23 $
$\Rightarrow x = -15 - 23 $
$\Rightarrow x = -38$
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Question 1161 Mark
Write the following integers in the decreasing order: $0, 7, -3, -9, -132, 36$
Answer
$36 > 7 > 0 > -3 > -9 > -132$
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Question 1221 Mark
Which number is smaller the following pairs? $-26, 17$
Answer
$-26 < 17$ This is because every positive integer is greater than every negative integer.
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Question 1241 Mark
Add: $+\ 178\\ \underline{\ -69\ } \\\underline{\ \ \ \ \ \ \ \ \ \ \ }$
Answer
$+\ 178\\\underline{\ -69}\\ \underline{+\ 109\ }$
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Question 1251 Mark
Add: $\ -103\\ \underline{\ +312\ } \\\underline{\ \ \ \ \ \ \ \ \ \ \ \ \ }$
Answer
$\ -103\\ \underline{\ +312\ } \\\underline{\ +209\ \ }$
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Question 1271 Mark
Simplify: $37 + (-23) + (-65) + 9 + (-12)$
Answer
$37 + (-23) + (-65) + 9 + (-12) $
$= 37 + 9 – (23 + 65 + 12) $
$= 46 – 100 $
$= -54$
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Question 1331 Mark
Simplify: $(-7) + (-9) + 12 + (-16)$
Answer
$(-7) + (-9) + 12 + (-16) = 12 – (7 + 9 + 16) = 12 – 32 = -20$
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Question 1381 Mark
Find the products: $(-3) \times (-7) \times (-6)$
Answer
$(-3) \times (-7) \times (-6) = (-3) \times 42 = -246$
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Question 1411 Mark
Use convenient groupings and find the values of: $(-17) \times (-23) \times 41$
Answer
$(-17) \times (-23) \times 41 = (-17) \times (-943) = 16031$
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Question 1461 Mark
Use convenient groupings and find the values of: $18 \times (-27) \times 30$
Answer
$18 \times (-27) \times 30 = 18 \times (-810) = -14580$
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Question 1481 Mark
Simplify: $(-145) + 79 + (-265) + (-41) + 2$
Answer
$(-145) + 79 + (-265) + (-41) + 2 $
$= 79 + 2 – (145 + 256 + 41)$
$ = 81 – 451 $
$= -370$
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Question 1501 Mark
Find the additive inverse of: $183$
Answer
$183 – 183 = 0$ So, the additive inverse of $183$ is $-183.$
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