Any Strategy
Make a 10
Doubles
100
7+8=
Use Any Strategy
15
Explain strategy used
100
8+3=
Use Make a Ten strategy
11
Explain your answer
100
Kansas has 10 pennies. He gets 10 more pennies. How many pennies does Kansas have in all?
Show your work.
20
200
8+9=
A) 16
B) 17
C) 18
D) 19
B) 17
Explain your strategy
200
There are 9 children on the playground. Then
2 more children join them. How many children in all are on the playground?
11
Show how you made a 10
200
Neva buys 5 red apples and 6 yellow apples. How many apples does she buy in all?
Show your work.
5+6=
5+5=10
10+1=11
300
Find 5 + 6. Tell if you can use each equation
to find the sum.
1 + 6 + 6 = ?
5 + 5 + 1 = ?
6 + 4 + 1 = ?
6 + 6 + 1 = ?
No
Yes
Yes
No
300
Mei finds 9 + 8.
What does Mei do wrong? What is the correct answer?
9 + 1 = 10
10 + 8 = 18
9 + 8 = 18
She didn't subtract 1 from 8 when she borrowed it to Make a Ten with 9.
300
Mabel rides her bike 8 blocks to her mom’s apartment. Then she rides her bike 7 more blocks to the park. How many blocks in all does Mabel ride her bike?
Show your work.
8+7= 8+7=
7+7= 14 8+8=16
14+1=15 16-1=15
8+7=15 8+7=15
400
What are two ways you can find 8 + 9? Explain.
Show two strategies
17
400
Anwar plays hockey for 8 hours in one week. The next
week, he plays hockey for 6 hours. How many hours
does he play hockey in both weeks?
14
Show Make a 10 Strategy
400
Mateo is decorating a frame for a family picture. He uses 9 blue buttons and
8 green buttons. How many buttons
does Mateo use in all?
Which equations can you use to solve
the problem? Choose all that apply.
A) 1 + 9 + 9 = ?
B) 8 + 8 + 1 = ?
C) 9 + 9 + 1 = ?
D) 9 + 1 + 7 = ?
E) 1 + 8 + 8 = ?
B and E
Explain your answer
500
Lina is playing a game with seeds called Uffangali. She collects 7 seeds on her first turn. On her next turn, Lina collects 5 seeds. How many seeds does she collect in all?
Show your work.
12
Explain your answer
500
Keisha and Clay each find 5 + 7 by making
a ten.
Keisha: Clay:
Break Apart 5. Break Apart 7.
Make a ten. 7+3=10 Make a ten. 5+5=10
Add 2 more. 10+2=12 Add 2 more. 10+2=10
7+5=12 7+5=12
Do they both make a ten correctly? Explain.
Yes
Why?
500
Find 6 + 7. Tell if you can use each of the following to find the sum.
6 + 6 + 1
7 + 7 + 1
7 + 3 + 3
10 + 4
Yes
No
Yes
No