Maths: Subtraction

Learning Intention: To explore subtraction using the ‘whole-part-part’ strategy.

Option 1: Subtraction Smash

Fill the strip with balls of play dough in each box. Roll a die. (If you do not have dice at home, use this link instead.) Students smash the number of play dough balls shown on the die.  Record how many play dough balls are left.

Option 2: Subtraction Mat

To begin, place the worksheet in a plastic pocket or sheet protector, or draw a similar robot on your whiteboard. Students will start by rolling two dice. (If you do not have dice at home, use this link instead.) They will make the larger number in the green box with materials (such as LEGO, buttons or pasta) to represent the ‘whole’. Then they will slide the part they are taking away (the smaller number) into the yellow box. Finally they will solve the subtraction problem by pushing whatever is left to the red box. That will be the answer to the problem.

Option 3: Subtraction Game

Click here to play Count Bowling.

Subtraction: Part 2

Learning Intention: To explore subtraction using the ‘whole-part-part’ strategy.

Option 1: Subtraction Bowling

Use toy bowling pins, or set up 10 plastic cups against a wall in a bowling pin formation. The player rolls a ball towards the cups to try and knock the “pins” over. Count how many were knocked over and record that number on the recording sheet / whiteboard. Students can check their answer by counting how many are left standing.

Option 2: Build-it Subtraction Cards

Using materials such as LEGO, buttons or pasta, make the first number shown on the card. Take away the other number from your group of objects to solve the sum.

Option 3: Subtraction Game

Click here to play Chopper Squad.