Fill in the blanks in units (Eg 3 u) or unit equations (Eg 1 u + 2).
Bryan and Adam have some stickers.
29 of the stickers Bryan has is 20 less than
45 of what Adam has.
Let
45 of Adam's stickers be 4 u.
- Number of stickers that Adam has = ___________
- Number of stickers that Bryan has = ___________
- Total number of stickers = ___________
- Difference in the number of stickers between Bryan and Adam = ___________
(a)
Change fraction into units.
45 of Adam's stickers → 4 u
15 of Adam's stickers → 1 u
55 of Adam's stickers → 5 u
Number of Adam's stickers = 5 u
(b)
29 of Bryan's stickers → 4 u - 20
19 of Bryan's stickers → (4 u - 20) ÷ 2 = 2 u - 10
99 of Bryan's stickers → 9 x (2 u - 10) = 18 u - 90
Number of Bryan's stickers = 18 u - 90
(c)
Total number of stickers
= 5 u + 18 u - 90
= 23 u - 90
(d)
Difference in the number of stickers between Bryan and Adam
= (18 u - 90) - 5 u
= 18 u - 5 u - 90
= 13 u - 90
Answer(s): (a) 5 u; (b) 18 u - 90; (c) 23 u - 90; (d) 13 u - 90