Correct Answer: A) 488
Explanation:
First, calculate the exponents:
83=512
72=49
52=25
Now, perform the subtraction and addition:
512–49+25=488
A) 54
B) 56
C) 58
D) 60
Correct Answer: B) 56
Explanation:
First, calculate inside the parentheses:
36+12=48
Then, divide:
48÷6=8
Now, multiply:
8×7=56
A) 1569.1
B) 1569.2
C) 1569.3
D) 1569.4
Correct Answer: A) 1569.1
Explanation:
First, add and subtract in sequence:
1234.5+456.2=1690.7
1690.7–278.4=1412.3
1412.3+156.8=1569.1
A) 488
B) 486
C) 484
D) 492
Correct Answer: A) 488
Explanation:
First, calculate the exponents:
83=512
72=49
52=25
Now, perform the subtraction and addition:
512–49+25=488
A) 869.0
B) 869.1
C) 869.2
D) 869.3
Correct Answer: D) 869.3
Explanation:
First, add and subtract in sequence:
445.1+228.9=674.0
674.0–115.4=558.6
558.6+310.7=869.3
A) 60
B) 61
C) 62
D) 63
Correct Answer: D) 63
Explanation:
First, calculate inside the parentheses:
4+6=10
Then, multiply:
9×10=90
Then, calculate the exponent:
33=27
Now, subtract:
90–27=63
A) 659.5
B) 659.6
C) 659.9
D) 649.9
Correct Answer: C) 659.9
Explanation:
First, add and subtract in sequence:
158.9+432.7=591.6
591.6–189.5=402.1
402.1+257.8=659.9
A) 380
B) 382
C) 384
D) 386
Correct Answer: B) 382
Explanation:
First, calculate the exponents:
73=343
52=25
82=64
Now, perform the subtraction and addition:
343–25+64=382
A) 836.5
B) 836.6
C) 836.7
D) 836.9
Correct Answer: D) 836.9
Explanation:
First, add and subtract in sequence:
345.8+267.9=613.7
613.7–189.3=424.4
424.4+412.5=836.9
A) 106
B) 108
C) 110
D) 112
Correct Answer: B) 108
Explanation:
First, calculate inside the parentheses:
5+7=12
Then, multiply:
12×12=144
Then, calculate the exponent:
62=36
Now, subtract:
144–36=108
A) 1008.9
B) 1009.0
C) 1009.1
D) 1009.2
Correct Answer: C) 1009.1
Explanation:
First, add and subtract in sequence:
578.3+198.4=776.7
776.7–124.8=651.9
651.9+357.2=1009.1
A) 55
B) 56
C) 57
D) 58
Correct Answer: B) 56
Explanation:
First, calculate inside the parentheses:
48+36=84
Then, divide:
1284=7
Now, multiply:
7×8=56
A) 1561.0
B) 1562.0
C) 1563.0
D) 1561.5
Correct Answer: A) 1561.0
Explanation:
First, add and subtract in sequence:
923.6+284.5=1208.1
1208.1–126.4=1081.7
1081.7+479.3=1561.0
A) 61
B) 62
C) 63
D) 64
Correct Answer: A) 61
Explanation:
First, multiply:
9×7=63
Then, calculate the exponents:
52=25
33=27
Now, add and subtract:
63+25–27=61
A) 2113.6
B) 2113.7
C) 2113.8
D) 2113.9
Correct Answer: C) 2113.8
Explanation:
First, add and subtract in sequence:
1496.4+832.5=2328.9
2328.9–428.7=1900.2
1900.2+213.6=2113.8
A) 92
B) 93
C) 94
D) 95
Correct Answer: A) 92
Explanation:
First, calculate inside the parentheses:
13+7=20
Then, multiply:
5×20=100
Then, calculate the exponent:
23=8
Now, subtract:
100–8=92
A) 904.5
B) 904.6
C) 904.7
D) 904.8
Correct Answer: D) 904.8
Explanation:
First, add and subtract in sequence:
672.9+154.6=827.5
827.5–132.5=695.0
695.0+209.8=904.8
A) 158
B) 148
C) 138
D) 168
Correct Answer: A) 158
Explanation:
First, calculate the exponents:
112=121
72=49
Then, multiply:
3×4=12
Now, perform the addition and subtraction:
121–12+49=158
A) 696.0
B) 696.1
C) 696.2
D) 696.3
Correct Answer: B) 696.1
Explanation:
First, add and subtract in sequence:
231.9+126.4=358.3
358.3–74.5=283.8
283.8+412.3=696.1
A) 45
B) 46
C) 47
D) 48
Correct Answer: A) 45
Explanation:
First, calculate inside the parentheses:
16+24=40
Then, divide:
40÷8=5
Now, multiply:
5×9=45
A) 900.4
B) 900.5
C) 900.6
D) 900.7
Correct Answer: C) 900.6
Explanation:
First, add and subtract in sequence:
568.4+123.7=692.1
692.1–89.6=602.5
602.5+298.1=900.6
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