Think Add to Subtract!
Fox had 10 buns. He gave 8 to Cat. How many buns are left?
1st Grade MathStep 1: Think Add!
Cat got the 8 orange buns. What do we add to 8 to make 10?
8 + 2 = 10. So 10 - 8 = 2! Count the 2 green buns. Fox has 2 buns left.
Step 2: Count On
10 - 6 = ? Go at 6. Count on up to 10. How many hops?
4 hops: 7, 8, 9, 10. So 6 + 4 = 10, and 10 - 6 = 4!
Let's Remember
Think Add to Subtract!
Step 1: See 10 - 8 = ?
Step 2: Think 8 + ? = 10
Step 3: Count on: 9, 10. That is 2!
2 is the difference.
Step 2: Think 8 + ? = 10
Step 3: Count on: 9, 10. That is 2!
2 is the difference.
Solve It!
9 - 7 = ?
Think: 7 + ? = 9
Think: 7 + ? = 9. Count on: 8, 9. That is 2. So 9 - 7 = 2!
What Fits in the Blank?
5 + ? = 8
This helps you solve 8 - 5!
5 + 3 = 8. Count on from 5: 6, 7, 8. So 8 - 5 = 3!
Help Meg!
Meg had 7 socks. She gave 3 to Kit. How many are left?
Think: 3 + ? = 7. Count on: 4, 5, 6, 7. That is 4 hops. Meg has 4 socks left!
Solve It!
10 - 4 = ?
Think: 4 + ? = 10
4 + 6 = 10. Count on from 4: 5, 6, 7, 8, 9, 10. Six hops! So 10 - 4 = 6.
Fill It In!
9 + ? = 12
This helps you solve 12 - 9!
9 + 3 = 12. Count on from 9: 10, 11, 12. So 12 - 9 = 3!
The Big One!
13 - 8 = ?
Which add fact helps you solve it?
8 + 5 = 13. Count on from 8: 9, 10, 11, 12, 13. Five hops! So 13 - 8 = 5.
You Think!
When could you count on to subtract at home? Tell a pal!
You Did It!
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