# 3.8: Silly Stickers

**At Grade**Created by: CK-12

**Silly Stickers – Reason Proportionally**

**Teacher Notes**

Given the price of one sticker, students compute the cost of 2 to 12 stickers. To do the computation, students can either use repeated addition or skip count. Sticker prices are 2, 5 or 10 cents in this set of problems. In the Extras for Experts, individual stickers are 3, 4, or 6 cents

Encourage students to record the cost of a sticker on each of the stickers in each set. This will facilitate the skip counting or use of repeated addition.

**Solutions**

**Silly Stickers: Hats**

1. 15

2. 10

3. 30

4. 25

5. 35

6. 45

7. 50

8. 60

**Silly Stickers: Faces**

9. 4

10. 10

11. 6

12. 8

13. 12

14. 16

15. 14

16. 20

**Silly Stickers: Shoes**

17. 30

18. 60

19. 50

20. 90

21. 40

22. 80

23. 70

24. 100 or $1

**Silly Stickers: Hats**

**How much for these stickers?**

\begin{aligned}& \mathbf{Describe:} && \text{One silly sticker is} \ 5 \cancel{\text{c}}\\ &&& \text{There are} \ 8 \ \text{stickers.}\\ &&& \text{The} \ 8 \ \text{stickers don't have a price.}\\ & \mathbf{My \ Job:} && \text{Figure out how many cents for} \ 8 \ \text{stickers.}\\ & \mathbf{Plan:} && \text{Write} \ 5 \cancel{\text{c}} \ \text{on each sticker.}\\ &&& \text{Count by} \ 5 \text{s to get the number of cents.}\\ & \mathbf{Solve:}\end{aligned}

\begin{aligned}&&& 8 \ \text{stickers cost} \ 40 \cancel{\text{c}}\\ & \mathbf{Check:} && \text{Add each row:}\\ &&& 5+5+5+5 = 20 \cancel{\text{c}}\\ &&& 5+5+5+5 = 20 \cancel{\text{c}}\\ &&& 20+20 = 40 \cancel{\text{c}}\end{aligned}

**Silly Stickers: Hats**

**How much for these stickers?**

1.

2.

3.

4.

**Silly Stickers: Hats**

**How much for these stickers?**

5.

6.

7.

8.

**Silly Stickers: Faces**

**How much for these stickers?**

9.

10.

11.

12.

**Silly Stickers: Faces**

**How much for these stickers?**

13.

14.

15.

16.

**Silly Stickers: Shoes**

**How much for these stickers?**

17.

18.

19.

20.

**Silly Stickers: Shoes**

**How much for these stickers?**

21.

22.

23.

24.

**Extras for Experts Silly Stickers: Masks**

**How much for these stickers?**

1.

2.

3.

4.

**Extras for Experts Silly Stickers: Masks**

**How much for these stickers?**

5.

6.

7.

8.

**Extras for Experts Silly Stickers: Masks**

**How much for these stickers?**

9.

10.

11.

12.

**Extras for Experts Silly Stickers: Masks**

**How much for these stickers?**

13.

14.

15.

16.

**Extras for Experts Silly Stickers: Masks**

**Solutions**

- 6
- 12
- 18
- 21
- 24
- 30
- 36
- 60
- 16
- 20
- 36
- 24
- 18
- 30
- 24
- 60

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