Fill in the blanks in units or unit equations. (Eg 3 u OR 1 u + 2)
A box contains some stickers in three colors.
45% of the stickers are red.
There are 12 more blue stickers than red stickers.
The remaining stickers are green.
- Number of red stickers = _____
- Number of blue stickers = _____
- Number of blue stickers and red stickers = _____
- Number of green stickers = _____
(a)
Change percentage into units.
45% =
45100 =
920 Number of red stickers = 9 u
(b)
There are 12 more blue stickers than red stickers.
Number of blue stickers = 9 u + 12
(c)
Number of blue stickers and red stickers
= 9 u + 9 u + 12
= 18 u + 12
(d)
Number of green stickers
= 20 u - (18 u + 12)
= 20 u - 18 u - 12
= 2 u - 12
Answer(s): (a) 9 u; (b) 9 u + 12; (c) 18 u + 12; (d) 2 u - 12