Addition
7+4=?
11
12-6=?
6
Which strategy would you use to solve 14-7?
It's a double!
The answer is 7
What is 6+10?
16
Mrs. McKinney draws a shape with 3 sides, what could it be?
A triangle
8+6=?
14
18-9=?
9
What strategy would you use to solve
8+9?
It is 17
You could use a double or make a ten!
12+10=?
10 + 10=20 so...
12 + 10 is 2 more so it's 22
7+2+3=?
7+3=10 plus 2 more is 12
3+17=?
3+7=10 so...
3+17=20
20-4=?
10-4=6 so....
20-4=16
What strategy would you use to solve
18-15?
Count down to: 17, 16, 15
You count back 3
30+10=?
40
Which number is odd?
12, 10, 13?
13
20+13=?
33
22-10=?
12
Which strategy would you use to solve
23+15?
2 tens plus 1 ten is 3 tens
3 ones plus 5 ones is 8 ones
It is 3 tens and 8 ones or 38
53+10=
63
Which number is greater?
168 or 163
163
33+72
105
26-10=
16
What strategy would you use to solve
84+23
8 tens plus 2 tens is 10 tens that is 100
4 ones plus 3 ones is 7 ones so its 107
123 + 10=?
133
Count by 2's to 30
2, 4, 6, 8, 10 , 12, 14, 16, 18, 20, 22, 24, 26, 28, 30