Lesson 9
Subtract by crossing out
Starter
How many balloons are left?
👩🏻
Example
I can cross out to subtract.
👦🏻
6 take away 2 is 4.
6 - 2 = 4
This is a subtraction equation.
- means subtract.
= means is equal to.
30
Practice
1
Cross out. Fill in the blanks.
(Tap the items to cross them out!)
(a) Cross out 3.
5 - 3 =
Tap to cross out 3 apples first! 👆
(b) Cross out 4.
8 - 4 =
Tap to cross out 4 frogs first! 👆
(c) Cross out 2.
7 - 2 =
Tap to cross out 2 cars first! 👆
(d) Cross out 5.
10 - 5 =
Tap to cross out 5 stars first! 👆
31-32