Mixing It Up With Addition and Subtraction!

Lesson Plan - Get It!

Audio:

Addition and subtraction problems are a lot like solving puzzles!

When you add, you are solving a problem to find out how many more you had than before.

When you subtract, you find how many are left.

The plus sign + tells you that you should add.

The minus sign - tells you that you should subtract.

Neat!

Watch this song about adding and subtracting and sing along!

Time to practice!

Pretend you are at a circus.

Fun!

You have a bag of 10 peanuts.

You decide to give an elephant four peanuts.

• How many peanuts do you have left in your bag?

10 - 4 =?

It's time to subtract to find out how many peanuts are left in the bag!

One way to subtract is to count back.

10...9...8...7...6!

10 - 4 = 6!

There are 6 peanuts left in your bag.

Yay!

Watch this video about counting back to subtract!

There are other ways to subtract, too.

You can make a ten or break a number down to subtract.

Now, try an addition problem.

A monkey is juggling 6 balls.

Then, he gets 4 more balls.

• How many balls does the monkey have altogether?

6 + 4 = ?

One way to solve this problem is to count up!

6...7...8...9...10!

6 + 4 = 10

The monkey is juggling ten balls!

You can also make a ten to add.

Wow!

Try one more!

At the circus, sometimes giraffes walk around with balloons!

Neat!

This giraffe is holding 5 balloons.

Two of the balloons get loose and fly away. Oh no!

• How many balloons does the giraffe have left?

5 - 2 = ?

• What type of math problem is this?

It is a subtraction problem!

You are finding out how many balloons the giraffe has left.

You can count back to subtract.

Start from 5 and count back 2.

5...4...3!

There are 3 balloons left.

Way to go!

The giraffe has five balloons and then gets two more.

Time to add!

5 + 2 = ?

• How many balloons does the giraffe have now?

5 + 2 = 7!

Awesome work, math wiz!

It's time to move on to the Got It? section for more practice and fun!