Vocabulary
In the number 43, the 4 is in the _____ place.
What is tens?
4 tens + 2 tens=
What is 6 tens?
2 tens - 1 ten
What is 1 ten?
36+2
What is 38?
This is a related subtraction fact to 20 + 20 = 40.
What is 40-20=20?
In the number 27, the 7 is in the ____ place.
What is ones?
6 tens + 3 tens =
What is 9 tens?
5 tens - 2 tens
What is 3 tens?
54+4
What is 58?
This is a related addition fact to 30-20=10.
What is 20+10=30
The answer to an addition problem.
What is the sum?
40 + 40
What is 80?
80-20
What is 60?
65 + 2
What is 67?
This is a related subtraction fact to 30+40=70.
What is 70-40=30?
The answer to a subtraction problem.
What is the difference?
10 + 70
What is 80?
70-30
What is 40?
16 + 6
What is 22?
This is a related addition fact to 80-50=30
What is 30+50=80
You ________ to find the difference.
What is subtract?
50 + 50
What is 100?
100-50
What is 50?
75 + 6
What is 81?
This is a related subtraction fact to 40+50=90.
What is 90-50=40?