Question

find each number. round to the nearest tenth if necessary.

1. 20% of 70
2. 28.2% of 92
3. 60% of 68 is what number?
4. 25% of 96 is what number?

estimate.

1. 8% of 40
2. 24% of 60

Explanation:

Step1: Convert % to decimal, multiply

$20\% = 0.2$, $0.2 \times 70 = 14$

Step2: Convert % to decimal, multiply

$28.2\% = 0.282$, $0.282 \times 92 = 25.944 \approx 25.9$

Step3: Convert % to decimal, multiply

$60\% = 0.6$, $0.6 \times 68 = 40.8$

Step4: Convert % to decimal, multiply

$25\% = 0.25$, $0.25 \times 96 = 24$

Step5: Estimate: 8%≈10%, calculate

$10\% = 0.1$, $0.1 \times 40 = 4$ (or exact: $0.08 \times 40=3.2$, estimate to 3 or 4)

Step6: Estimate:24%≈25%, calculate

$25\% = 0.25$, $0.25 \times 60 = 15$

Answer:

1. 14
2. 25.9
3. 40.8
4. 24
5. 4 (or 3 if using exact estimate)
6. 15