1. Add 0.98 + 45.102 + 32.3333 + 31 + 0.00009
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368.573
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210.536299
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109.41539
-
99.9975
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80.8769543
2. Find 0.12 ÷ 1
-
12
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1.2
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.12
-
.012
-
.0012
3. (9 ÷ 3) x (8 ÷ 4) =
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1
-
6
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72
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576
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752
4. 6 x 0 x 5
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30
-
11
-
25
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0
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27
5. 7.95 ÷ 1.5
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2.4
-
5.3
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6.2
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7.3
-
7.5
6. -32 + 7 equals:
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-25
-
25
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-26
-
26
-
27
7. -37 + -47 equals:
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64
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-84
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65
-
-75
-
-66
8. 41% equals:
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4.1
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.41
-
.041
-
.0041
-
.00415
Answers & Explanations
1. C: Aligning the decimals at the decimal point and adhering to the same integer addition computation properties, the sum is equal to 109.41539.
2. C: Any number divided by 1 is equal to itself, thus 0.12 ÷ 1 = 0.12.
3. B: By first performing the computations within the parentheses, the expression may be rewritten as 3 × 2, which equals 6.
4. D: The product is 0, since the product of any number, or numbers, and 0, equals 0.
5. B: The division may be performed by first dividing 1.5 into 7.9 and then dividing 1.5 into 0.45. Doing so gives a quotient of 5.3
6. A: Addition of 7 to the integer, -32, shows a movement of 7 units to the right, giving a sum of -25.
7. B: The sum of the two negative integers will be negative. Starting at -37 on a number line and moving 47 units to the left, gives a sum of -84.
8. B: The percentage, 41%, may be converted to a decimal by moving the decimal point two places to the left. In other words, 41 is divided by 100 (or multiplied by 1/100), since one percent represents one-hundredth.