2. Answer: 50% of 46 is 23. Find Percent of a Number Mentally
A. Find 50% of 46 mentally.
Answer: 50% of 46 is 23.

3. B. Find 25% of 88 mentally. Answer: 25% of 88 is 22.
Find Percent of a Number Mentally
B. Find 25% of 88 mentally.
Answer: 25% of 88 is 22.

4. Find Percent of a Number Mentally
C. Find 70% of 110 mentally.
Answer: 70% of 110 is 77.

5. A. Find 50% of 82 mentally.
A. 41
B. 164
C. 16
D. 40
Lesson 7 CYP1

6. B. Find 25% of 36 mentally.
A. 144
B. 10
C. 90
D. 9
Lesson 7 CYP1

7. C. Find 80% of 60 mentally.
A. 12
B. 50
C. 48
D. 480
Lesson 7 CYP1

8. Estimate Percents
A. Estimate 22% of 494.
Answer: 22% of 494 is about 100.

9. A. Estimate 38% of 400.
A. 100
B. 152
C. 160
D. 80
Lesson 7 CYP2

10. 6-9 Percent of Change
If it increases, it is percent of increase.
If it decreases, it is percent of decrease.
Round to the nearest tenth.
19 in. to 25 in.
.31579
= %
31.6% increase

11. Round to the nearest tenth..2
= 20%
20% decrease
or –20%
$6/hr to $6.50/hr
.083
= 8.3%
8.3% increase or 8.3%

12. Assignment Round to the nearest tenth. 8 to 15 87.5% Increase or 87.5%
Big – Small = ¸ Original x 100 (% sign Inc/Dec)
Round to the nearest tenth.
8 to 15
87.5% Increase or 87.5%
42 to 12
71.4% Decrease or –71.4%
27 to 4
85.2% Decrease or –85.2%
Assignment
6 to 253
4116.7% Increase or %