Subtraction is the Opposite of Addition
3 + 7 = 10
10 − 3 = 7 | 10 − 7 = 3
One fact family — same 3 numbers!
Fill in the answer.
10 − 3 =
10 − 7 =
10 − 6 =
10 − 4 =
10 − 9 =
10 − 5 =
Estimate First! About how many are left? Circle your guess.
10 − 8: About 1 | About 5 | About 8
Now calculate: 10 − 8 =
10 − 2: About 1 | About 5 | About 8
Now calculate: 10 − 2 =
Use addition facts to help you subtract.
10 − 5: 5 + = 10, so 10 − 5 =
10 − 4: 4 + = 10, so 10 − 4 =
10 − 8: 8 + = 10, so 10 − 8 =
Challenge: Find the Missing Number
− 3 = 7
10 − = 4
− 6 = 4
10 − = 9