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Name That Strategy
What strategy works best?
Find the Sum
Find the Difference
Word Problems
100
Start with the larger number and count that many more!
Count On Strategy
100
What strategy works best to solve::: 7+7
Doubles
100
9+7= ?
16 Count On!
100
7-7= ?
0 Subtract All
100
Sarah has 5 marbles. 2 Marbles roll away. How many marbles does Sarah have left?
5-2=3 3 marbles
200
A number plus 0 Example: 8+0=8
Zero Facts
200
What strategy works best to solve::: 9+0
Zero Facts
200
12+6= ?
18 Count on
200
9-0= ?
9 Subtract 0
200
Derek caught 7 frogs. Blake caught 4 frogs. How many frogs did the boys catch together?
7+4=11 11 frogs
300
Think "that number twice" Two sixes equal 12
Doubles Facts
300
What strategy works best to solve::: 4+6
Make Ten or Count On
300
3+2+2= ?
7 3+2= 5 and add 2 more = 7
300
7-4= ?
3 Count Back
300
Billy has 10 books. Jenny borrowed 4 books from Billy. How many books does Billy have left?
10-4=6 6 books
400
Doubles +1 Use doubles to help you find one more or one less
Neighbor Facts
400
What strategy works best to solve::: 4+5 or 2+3
Neighbors 4+4=8 SO 4+5= 9 (which is 1 more!)
400
5+5+5= ?
15 count by 5s OR 5+5=10 and add 5 more = 15
400
10-5= ?
5 Doubles
400
Bob had 3 slices of pizza. Lyn had 2 slices of pizza. Max ate 5 slices of pizza! How many pieces of pizza did they ate all together?
3+2+5= 10 (think: 2+3=5 and then 5+5=10!)
500
What strategy are you using when you find different numbers that add up to equal 10?
Make Ten
500
What strategy works best to solve::: 11+3
Count On
500
10+7+3= ?
20 Make ten, then 10+10=20 or count on
500
17-7=
10 Make 10
500
Jerry received 8 dollars for his birthday. Jerry bought a lego guy for 4 dollars. How many dollars does Jerry have left?
8-4= 4 (Doubles)