Let's solve each expression step by step using the
order of operations, often remembered by the acronym
PEMDAS:
-
Parentheses
-
Exponents
-
Multiplication and
Division (from left to right)
-
Addition and
Subtraction (from left to right)
---
1. $(-5)^2 - 2 \times (-9) + 6$
- Exponent: $(-5)^2 = 25$
- Multiplication: $2 \times (-9) = -18$
- Now: $25 - (-18) + 6 = 25 + 18 + 6 = 49$
✔ Answer: 49
---
2. $3 \times 10 + 8 - 4^2$
- Exponent: $4^2 = 16$
- Multiplication: $3 \times 10 = 30$
- Now: $30 + 8 - 16 = 38 - 16 = 22$
✔ Answer: 22
---
3. $(-9) - (-8) + 2 \times 4^2$
- Exponent: $4^2 = 16$
- Multiplication: $2 \times 16 = 32$
- Now: $-9 - (-8) + 32 = -9 + 8 + 32 = -1 + 32 = 31$
✔ Answer: 31
---
4. $(-3)^3 - 2 + 8 \div (-8)$
- Exponent: $(-3)^3 = -27$
- Division: $8 \div (-8) = -1$
- Now: $-27 - 2 + (-1) = -29 - 1 = -30$
✔ Answer: -30
---
5. $8 \div (-4) \times (-6)^2 + 7$
- Exponent: $(-6)^2 = 36$
- Division: $8 \div (-4) = -2$
- Multiplication: $-2 \times 36 = -72$
- Addition: $-72 + 7 = -65$
✔ Answer: -65
---
6. $4 \times (-8) + 6 - (-2)^3$
- Exponent: $(-2)^3 = -8$
- Multiplication: $4 \times (-8) = -32$
- Now: $-32 + 6 - (-8) = -26 + 8 = -18$
✔ Answer: -18
---
7. $10 \times 5 - (-6)^2 + (-8)$
- Exponent: $(-6)^2 = 36$
- Multiplication: $10 \times 5 = 50$
- Now: $50 - 36 + (-8) = 14 - 8 = 6$
✔ Answer: 6
---
8. $(-5)^2 \times 3 + 5 + 9$
- Exponent: $(-5)^2 = 25$
- Multiplication: $25 \times 3 = 75$
- Now: $75 + 5 + 9 = 89$
✔ Answer: 89
---
9. $(10 \div (-5) - (-2)) \times (-3)^2$
- Parentheses first:
- $10 \div (-5) = -2$
- $-2 - (-2) = -2 + 2 = 0$
- Exponent: $(-3)^2 = 9$
- Multiplication: $0 \times 9 = 0$
✔ Answer: 0
---
10. $4 \times (-6) \div 8 + 3^3$
- Exponent: $3^3 = 27$
- Multiplication and Division from left to right:
- $4 \times (-6) = -24$
- $-24 \div 8 = -3$
- Addition: $-3 + 27 = 24$
✔ Answer: 24
---
✔ Final Answers:
1.
49
2.
22
3.
31
4.
-30
5.
-65
6.
-18
7.
6
8.
89
9.
0
10.
24
Let me know if you'd like this formatted as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of operations of integers worksheet.