Vocab
The _______ is the answer to a subtraction problem.
A. Adjust
B. Difference
C. Total
B. Difference
36 - 6 = ?
30
Make a part, part, whole or number bond with these
12, 28, 16
Teacher check!
How can you adjust 8 to make it a friendly number?
Add 2 to make it a 10
The ____ of a digit tells you whether the digit represents a number or tens or ones.
A. Difference
B. Size
C. Place Value
25 - 13 = ?
12
Decompose the number 32 into tens and ones.
30 2
How can you adjust 23 to make it a friendly number?
When you ________ numbers you break them into different parts.
A. Decompose
B. Difference
C. Add
A. Decompose
16
Decompose the number 74 into tens and ones
70 4
Adjust to subtract
21 - 14
7
One way to subtract on a number line is to:
A. Regroup
B. Count back
C. Adjust
B. Count back
61 - 34 = ?
27
Decompose to subtract: 46 - 24 =
40- 20= 20
6 - 4 = 2
22
Adjust to subtract:
38 - 24
14
You can __________ 1 ten and 10 ones to help you subtract.
A. count
B. add
C. regroup
C. regroup!
76 - 19 =
57
Decompose to subtract: 68 - 36 =
60 - 30 = 30
8 - 6 = 2
32
Adjust to subtract: 54 - 25=
29