Name: 
 

Lesson 10: Solving Problems by Working Backwards



 1. 

Taylor sorted stickers into 6 equal groups. She then sorted the stickers into 3 piles of 3.  How many stickers did Taylor have to start with?
a.
54
b.
48
c.
42
d.
45
 

 2. 

Ryan is making a wire sculpture.  He cut the wire into 5 equal pieces. Then he cut 2 cm from each piece so that each piece was 4 cm long.  How long was the wire he started with?
a.
30 cm
b.
35 cm
c.
50 cm
d.
55 cm
 

 3. 

Juliette’s grandfather gave her $20. She spent $5 and put the rest in her piggy bank. Now she has $50 in the piggy bank. How much was in her piggy bank before her grandfather gave her the money?
a.
$30
b.
$35
c.
$40
d.
$45
 

 4. 

34 people camped in 5 tents. The smallest tent only held 2 people. All the other tents held an equal number of people. How many people did the other tents hold?
a.
5
b.
8
c.
6
d.
7
 

 5. 

Desmond sorted some hockey cards into 6 equal groups. He then sorted each group into 2 piles of 3 cards. How many cards did he start with?
a.
32
b.
34
c.
36
d.
38
 



 
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