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Subtract within 10

Students subtract from a number up to 10, using objects, drawings, or counting back. They extend subtraction from within 5 to within 10.

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Subtract within 10

Kindergarten · Addition and Subtraction Within 10 · question 1 of 3

0 of 12

12 rungs. A star at the top.

3 − 1 =

How it is taught

0:00 of 1:47

Subtract means take away.

The difference is what is left.

Read it: Take away, count back

There are 8 apples. 2 are taken away. Count back: 8, 7. 6 are left.

  1. Start with 8.
  2. Take away 2.
  3. Count back: 8, 7. Now 6.

Taking away makes a number smaller, so you count back, not on.

You start at 8, the number you have, not at 1.

2 taken away from 8 leaves 6 apples on the tray.

Start with what you have. Count back.

Saying 2, the ones taken away, for how many are left.

Count what is still there: 6 apples.

8 − 1 = ___ — 7. Count back 1 from 8: 7.

7 − 3

Imagine seven birds sitting on a branch. Three fly away. How many stay?

Here are our seven birds. Let's count them: one, two, three, four, five, six, seven!

One bird flies away. Cross it off!

Another bird flies away. That's two gone.

And one more flies away. That makes three birds gone.

Now let's count what's left: one, two, three, four. Four birds stay!

We can write this. We started with seven, then took away...

...three. Seven minus three equals what?

Four! Seven take away three is four.

Seven minus three is four. Great counting!

7 birds, 3 fly away — how many stay?Let's find out together!7 birds3 flew away4 birds left!7−3=?4ANSWER4birds left
Kindergarten · Seven birds, three fly away

What you see

While they climb, your page writes one true line to ask about tonight, and a short note each Sunday.

MayaGrade 3 · Mathematics
Did you know?

A chessboard has 64 squares — share them out between the 8 rows and each row holds exactly 8.

Today’s goal
1 star — one skill mastered, every rung of its ladder climbed
Climbing now
Divide within 100

An example student.

MayaGrade 3 · Mathematics

Maya earned 2 stars this week — Interpret multiplication as equal groups, which took 6 answers over 3 days before its star landed 3 days ago and Multiply by 6, 7, 8 and 9. Next up: Divide within 100.

An example week.

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