Fill in the blanks.
Adam has nine times as many stickers as Bryan.
Adam gave 9 to Bryan.
In the end, Adam has eight times as many stickers as Bryan.
- Difference in the number of stickers between Adam and Bryan at first = _____ u
- Difference in the number of stickers between Adam and Bryan in the end = _____ u
- Difference in the number of stickers Adam has at first and in the end = _____ u
- Difference in the number of stickers Bryan has at first and in the end = _____ u
|
Adam |
Bryan |
Total |
Before |
9 x 9 = 81 u |
1 x 9 = 9 u |
10 x 9 = 90 u |
Change |
- 9 |
+ 9 |
|
After |
8 x 10 = 80 u |
1 x 10 = 10 u |
9 x 10 = 90 u |
(a)
Change X times into units.
There is an internal transfer of 9 stickers from Adam to Bryan.
The total remains unchanged.
LCM of 10 and 9 is 90.
Number of stickers that Adam gives to Bryan
= 81 u - 80 u
= 1 u
Difference in the number of stickers between Adam and Bryan at first
= 81 u - 9 u
= 72 u
(b)
Difference in the number of stickers between Adam and Bryan in the end
= 80 u - 10 u
= 70 u
(c)
Difference in the number of stickers that Adam has at first and in the end
= 81 u - 80 u
= 1 u
(d)
Difference in the number of stickers that Bryan has at first and in the end
= 10 u - 9 u
= 1 u
Answer(s): (a) 72; (b) 70; (c) 1; (d) 1