Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).
Bryan and Adam have some stickers.
When Adam uses
710 of his stickers and
Bryan buys another 50 stickers,
they have the same number of stickers each.
Let the number of stickers that Adam has in the end be 3 u.
- Number of stickers that Bryan has in the end = _____
- Number of stickers that Adam has at first = _____
- Number of stickers that Bryan has at first = _____
- Total number of stickers that they have at first = _____
|
Adam |
Bryan |
Before |
10 u |
3 u - 50 |
Change |
- 7 u |
+ 50 |
After |
3 u |
3 u |
Comparing between Adam and Bryan |
1 x 3 = 3 u |
1 x 3 = 3 u |
(a)
Change equal stage into units.
The number of stickers that Adam has in the end is repeated.
Change the ratio into units.
LCM of 3 and 1 = 3
Number of stickers that Bryan has in the end = 3 u
(b)
Number of stickers that Adam has at first = 10 u
(c)
Number of stickers that Bryan has at first = 3 u - 50
(d)
Total number of stickers that they have at first
= 10 u + (3 u - 50)
= 10 u + 3 u - 50
= 13 u - 50
Answer(s): (a) 3 u; (b) 10 u; (c) 3 u - 50; (d) 13 u - 50