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Basic Arithmetic
Problem 1:
What is 47 + 38?
A) 75
B) 85
C) 95
Step-by-step:
Add the units first: 7 + 8 = 15. Then add the tens: 40 + 30 = 70. Finally, 70 + 15 = 85.
Problem 2:
What is 125 - 68?
A) 57
B) 67
C) 53
Step-by-step:
Subtract 60 from 125 to get 65, then subtract the remaining 8: 65 - 8 = 57.
Problem 3:
What is 14 × 6?
A) 74
B) 84
C) 94
Step-by-step:
Break it into parts: (10 × 6) + (4 × 6) = 60 + 24 = 84.
Problem 4:
What is 108 ÷ 9?
A) 11
B) 12
C) 13
Step-by-step:
Since 9 × 10 = 90 and 9 × 2 = 18, 9 × 12 = 108. So 108 ÷ 9 = 12.
Problem 5:
What is 15% of 80?
A) 10
B) 12
C) 15
Step-by-step:
10% of 80 is 8, and 5% (half of 10%) is 4. Adding them together: 8 + 4 = 12.
Problem 6:
What is the value of 5 + 3 × 4?
A) 17
B) 32
C) 23
Step-by-step:
By order of operations (PEMDAS/BODMAS), perform multiplication before addition: 3 × 4 = 12, then 5 + 12 = 17.
Problem 7:
What is 250 - (45 + 55)?
A) 160
B) 150
C) 140
Step-by-step:
Solve inside the parentheses first: 45 + 55 = 100. Then subtract: 250 - 100 = 150.
Problem 8:
If you buy 3 books costing $6 each and pay with a $50 bill, how much change do you receive?
A) $32
B) $18
C) $28
Step-by-step:
Total cost is 3 × $6 = $18. Your change from $50 is $50 - $18 = $32.
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