Fill in the blanks in decimals.
2 boys, Adam and Bryan, share some stickers.
Bryan has 70% of the total.
If Bryan gives away some stickers,
his number of stickers decreases by 40%.
- 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 |
3 u |
7 u |
Change |
|
- 2.8 u |
After |
3 u |
4.2 u |
(a)
Change percentage into units.
70% =
70100 =
710Fraction of the stickers that Bryan has at first =
710 Number of stickers that Bryan has at first = 7 u
(b)
Change in the number of stickers that Bryan has
= 40% x 7 u
=
40100 x 7 u
= 0.4 x 7 u
= 2.8 u
(c)
Number of stickers that Bryan has in the end
= 7 u - 2.8 u
= 4.2 u
(d)
Fraction of the number of stickers that Adam has at first
= 1 -
710 =
310 There is no change in the number of stickers that Adam has.
Number of stickers that Adam has in the end = 3 u
Answer(s): (a) 7; (b) 2.8; (c) 4.2; (d) 3