Here are the solutions for the "Make a 10 to help you add" worksheet.
The goal is to break apart the second number so that the first number becomes 10. Then, you just add the leftover part to 10.
1. $5 + 8$
* Take
5 from the 8 to make the 5 into a 10.
* The 8 becomes 5 and 3.
* $5 + 5 = 10$, then $10 + 3 = 13$.
*
Answer: $5 + 5 + 3 = 13$
2. $7 + 6$
* Take
3 from the 6 to make the 7 into a 10.
* The 6 becomes 3 and 3.
* $7 + 3 = 10$, then $10 + 3 = 13$.
*
Answer: $7 + 3 + 3 = 13$
3. $9 + 4$
* Take
1 from the 4 to make the 9 into a 10.
* The 4 becomes 1 and 3.
* $9 + 1 = 10$, then $10 + 3 = 13$.
*
Answer: $9 + 1 + 3 = 13$
4. $4 + 7$
* Take
6 from the 7 to make the 4 into a 10.
* The 7 becomes 6 and 1.
* $4 + 6 = 10$, then $10 + 1 = 11$.
*
Answer: $4 + 6 + 1 = 11$
5. $6 + 9$
* Take
4 from the 9 to make the 6 into a 10.
* The 9 becomes 4 and 5.
* $6 + 4 = 10$, then $10 + 5 = 15$.
*
Answer: $6 + 4 + 5 = 15$
6. $8 + 7$
* Take
2 from the 7 to make the 8 into a 10.
* The 7 becomes 2 and 5.
* $8 + 2 = 10$, then $10 + 5 = 15$.
*
Answer: $8 + 2 + 5 = 15$
Right Column (Using blocks):
7. $14 + 8$
* You have 14. You need
6 more to make 20 (a new ten).
* Take 6 from the 8. The 8 becomes 6 and 2.
* $14 + 6 = 20$, then $20 + 2 = 22$.
*
Answer: $14 + 6 + 2 = 22$
8. $12 + 9$
* You have 12. You need
8 more to make 20.
* Take 8 from the 9. The 9 becomes 8 and 1.
* $12 + 8 = 20$, then $20 + 1 = 21$.
*
Answer: $12 + 8 + 1 = 21$
Final Answer:
Left Column:
$5 + 5 + 3 = 13$
$7 + 3 + 3 = 13$
$9 + 1 + 3 = 13$
$4 + 6 + 1 = 11$
$6 + 4 + 5 = 15$
$8 + 2 + 5 = 15$
Right Column:
$14 + 6 + 2 = 22$
$12 + 8 + 1 = 21$
Parent Tip: Review the logic above to help your child master the concept of bridge math worksheet.
