K-5 friendly lesson
One small step at a time.Read the idea, try the activity, and celebrate each win as you go.

Subtract with Cubes - Up to 10

๐Ÿ’ฅ Let's break things apart! Use cubes to show how numbers shrink when we subtract.

Do this: Read the concept below, then try the quiz or activity.

Lesson 15 of 180

Concept

Subtraction means "taking away". We can build a cube tower to show the whole number, and then physically break it apart to subtract!

๐ŸŽฏ How to Subtract with Cubes: Example: 8 - 3 = ? 1. Build the Start Number: Build a tower of 8 cubes. This is your total amount. ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ 2. Take Away: Take 3 cubes off the end of your tower. 3. Count the Leftovers: You now have 5 cubes left in your tower. ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ๐ŸŸฆ 4. Answer: 8 - 3 = 5

Try it

Let's break some towers!

Instructions: Imagine the cube tower. Subtract the cubes to find what's left.

Problem 1: You build a tower of 9 cubes. A monster knocks off 4 cubes. How many are left? * Imagine the tower: 9 blocks * Take away: 4 blocks * Remaining: ___

Problem 2: Start with 6 cubes. Take away 6 cubes. * 6 - 6 = ___

Problem 3: Start with 10 cubes. Take away 2 cubes. * 10 - 2 = ___

Problem 4: Start with 7 cubes. Take away 0 cubes. * 7 - 0 = ___