Multiplying and Dividing Rational Numbers - Steps, Properties and ... - Free Printable

Let’s evaluate each expression one by one to see which ones equal -8.

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1. `16 - 1/2`

= 16 - 0.5 = 15.5 → ✘ Not -8

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2. `-16/3 × 1/2`

= (-16 × 1) / (3 × 2) = -16/6 = -8/3 ≈ -2.666... → ✘ Not -8

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3. `-1.25 × 6.4`

First, convert to fractions:
-1.25 = -5/4
6.4 = 64/10 = 32/5

So:
(-5/4) × (32/5) = (-5 × 32) / (4 × 5) = (-160)/20 = -8 ✔

✔️ This equals -8

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4. `-2.4` → obviously not -8 → ✘

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5. `12 × (-2/3)`

= (12 × -2) / 3 = -24 / 3 = -8 ✔

✔️ This equals -8

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6. `-1(-8)`

= -1 × -8 = 8 → ✘ Not -8

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7. `-32 × (-1/4)`

= (-32) × (-1/4) = 32/4 = 8 → ✘ Not -8

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8. `-18 ÷ 1/2`

Dividing by 1/2 is same as multiplying by 2:
-18 × 2 = -36 → ✘ Not -8

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9. `-24 × 1/3`

= -24/3 = -8 ✔

✔️ This equals -8

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10. `-1.75 - 4.6`

= -(1.75 + 4.6) = -6.35 → ✘ Not -8

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11. `-2 - 4`

= -6 → ✘ Not -8

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12. `12 × (-1/3)`

= -12/3 = -4 → ✘ Not -8

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13. `-32 × (1/4)`

= -32/4 = -8 ✔

✔️ This equals -8

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14. `1.6 - 5`

= -3.4 → ✘ Not -8

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15. `1.5 - 6`

= -4.5 → ✘ Not -8

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## ✔ Final Answer: The expressions that equal -8 are:

- -1.25 × 6.4
- 12 × (-2/3)
- -24 × 1/3
- -32 × (1/4)

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✔ So you should check the boxes next to these four expressions.

> 💡 Tip: Always simplify fractions or convert decimals to fractions for accuracy. Watch signs carefully — especially with negative numbers and division/multiplication!

Let me know if you’d like a visual breakdown of any step!