Fill in the blanks in decimals.
2 boys, Adam and Bryan, share some stickers.
Bryan has 10% of the total.
If Bryan gives away some stickers,
his number of stickers decreases by 20%.
- Number of stickers that Bryan has at first = _____ u
- Change in the number of stickers that Bryan has = _____ u
- Number of stickers that Bryan has in the end = _____ u
- Number of stickers that Adam has in the end = _____ u
|
Adam |
Bryan |
Before |
9 u |
1 u |
Change |
|
- 0.2 u |
After |
9 u |
0.8 u |
(a)
Change percentage into units.
10% =
10100 =
110Fraction of the stickers that Bryan has at first =
110 Number of stickers that Bryan has at first = 1 u
(b)
Change in the number of stickers that Bryan has
= 20% x 1 u
=
20100 x 1 u
= 0.2 x 1 u
= 0.2 u
(c)
Number of stickers that Bryan has in the end
= 1 u - 0.2 u
= 0.8 u
(d)
Fraction of the number of stickers that Adam has at first
= 1 -
110 =
910 There is no change in the number of stickers that Adam has.
Number of stickers that Adam has in the end = 9 u
Answer(s): (a) 1; (b) 0.2; (c) 0.8; (d) 9