Adam and Charlie have 20 stickers.
Adam has 9 times as many stickers as Charlie.
- How many stickers does Charlie have?
- How many stickers does Adam have?
- How many stickers does Adam have more than Charlie?
- How many stickers does Charlie have less than Adam?
(a)
Focus on the sentence with the word 'times'.
Assign 1 u to the variable that is found after the word 'times'.
Number of stickers that Charlie has = 1 u
Number of stickers that Adam has = 9 u
Total number of stickers they have = 9 u + 1 u = 10
10 u = 20
1 u = 20 ÷ 10 = 2
Number of stickers that Charlie has
= 1 u
= 2
(b)
Number of stickers that Adam has
= 9 u
= 9 x 2
= 18
(c)
Number of stickers that Adam has more than Charlie
= 9 u - 1 u
= 8 u
= 8 x 2
= 16
(d)
Number of stickers that Charlie has less than Adam
= 9 u - 1 u
= 8 u
= 8 x 2
= 16
Answer(s): (a) 2; (b) 18; (c) 16; (d) 16
