Fill in the blanks.
Bryan has ten times as many stickers as Adam.
Bryan gave 21 to Adam.
In the end, Bryan has seven times as many stickers as Adam.
- Difference in the number of stickers between Bryan and Adam at first = _____ u
- Difference in the number of stickers between Bryan and Adam in the end = _____ u
- Difference in the number of stickers Bryan has at first and in the end = _____ u
- Difference in the number of stickers Adam has at first and in the end = _____ u
|
Bryan |
Adam |
Total |
Before |
10 x 8 = 80 u |
1 x 8 = 8 u |
11 x 8 = 88 u |
Change |
- 21 |
+ 21 |
|
After |
7 x 11 = 77 u |
1 x 11 = 11 u |
8 x 11 = 88 u |
(a)
Change X times into units.
There is an internal transfer of 21 stickers from Bryan to Adam.
The total remains unchanged.
LCM of 11 and 8 is 88.
Number of stickers that Bryan gives to Adam
= 80 u - 77 u
= 3 u
Difference in the number of stickers between Bryan and Adam at first
= 80 u - 8 u
= 72 u
(b)
Difference in the number of stickers between Bryan and Adam in the end
= 77 u - 11 u
= 66 u
(c)
Difference in the number of stickers that Bryan has at first and in the end
= 80 u - 77 u
= 3 u
(d)
Difference in the number of stickers that Adam has at first and in the end
= 11 u - 8 u
= 3 u
Answer(s): (a) 72; (b) 66; (c) 3; (d) 3