Question

evaluate the expression

1. (16 ÷ 4) + 5

____ ÷ 5
____

1. 10 + 3 × 6

10 + ____
____

1. 5 × (12 - 7)

5 × ____
____

1. 15 ÷ 3 - 2
2. 20 ÷ (2 × 2)
3. 21 - 10 + 4

Explanation:

Step1: Solve inside parentheses for (16 + 4) + 5

$16+4 = 20$

Step2: Add the result to 5

$20 + 5=25$

Step3: For 10 + 3×6, multiply first

$3\times6 = 18$

Step4: Then add 10

$10+18 = 28$

Step5: For 5×(12 - 7), solve inside parentheses

$12 - 7=5$

Step6: Then multiply

$5\times5 = 25$

Step7: For 15 + 3 - 2, add first

$15+3 = 18$

Step8: Then subtract 2

$18-2 = 16$

Step9: For 20+(2×2), multiply inside parentheses

$2\times2 = 4$

Step10: Then add 20

$20 + 4=24$

Step11: For 21 - 10+4, subtract first

$21-10 = 11$

Step12: Then add 4

$11+4 = 15$

Answer:

1. 25
2. 28
3. 25
4. 16
5. 24
6. 15