Add and Subtract with Dot!
Dot has a hen. The hen lays eggs. Can you help Dot add them up?
1st Grade MathStep 1: Add or Subtract?
Dot has 8 eggs. The hen lays 5 more eggs.
Do we add or subtract?
We add! Dot gets more eggs. More eggs = add them up.
Step 2: Get the Sum
8 + 5 = ?
8 + 5 = 13. Go to 8, then add on 5: 9, 10, 11, 12, 13. The sum is 13 eggs!
This Will Help!
How to Solve It
Get more? add (+).
Take some off? subtract (-).
An equation shows it: 8 + 5 = 13.
Take some off? subtract (-).
An equation shows it: 8 + 5 = 13.
Read it. Think. Then solve it!
Read and Think
Sam has 9 fish. He gets 6 more fish.
How many fish in all?
9 + 6 = 15. Go to 9. Add on 6: 10, 11, 12, 13, 14, 15.
Read and Think
Meg had 12 buns. She gave 4 buns to Kit.
How many buns are left?
12 - 4 = 8. Meg gave 4 buns to Kit, so we subtract. 8 buns are left.
What Goes in the Blank?
Fox has 7 rocks. Meg gives him some rocks. Next, he has 11 rocks.
7 + ? = 11
7 + 4 = 11. Go to 7. Add on: 8, 9, 10, 11. That is 4 hops. 11 - 7 = 4.
Read and Think
Kit has 14 shells. Sam has 9 shells.
How many more shells does Kit have?
14 - 9 = 5. Kit has 5 more shells than Sam.
Solve It!
A frog sees 13 bugs. Then 6 bugs hop off.
How many bugs are left?
13 - 6 = 7. Go to 13. Hop back 6 times. You land on 7.
The Big One!
Some ducks sat on a pond. Then 5 more ducks came. Next, there were 12 ducks.
? + 5 = 12
How many ducks sat there first?
7 + 5 = 12. To get it, subtract: 12 - 5 = 7. So 7 ducks sat there first.
When do you add at home? When do you subtract? Tell it to a grown-up!
You Did It!
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