Fill in the blanks in units or unit equations. (Eg 3 u OR 1 u + 2)
A box contains some stickers in three colors.
15% of the stickers are green.
There are 20
less red stickers than green stickers.
The remaining stickers are blue.
- Number of green stickers = _____
- Number of red stickers = _____
- Number of red stickers and green stickers = _____
- Number of blue stickers = _____
(a)
Change percentage into units.
15% =
15100 =
320Number of green stickers = 3 u
(b)
There are 20 less red stickers than green stickers.
Number of red stickers = 3 u - 20
(c)
Number of red stickers and green stickers
= 3 u + 3 u - 20
= 6 u - 20
(d)
Number of blue stickers
= 20 u - (6 u - 20)
= 20 u - 6 u + 20
= 14 u + 20
Answer(s): (a) 3 u; (b) 3 u - 20; (c) 6 u - 20; (d) 14 u + 20