Lesson 5-4

LET'S BUILD Represent and Explain Subtraction with Equations

For more help with this lesson, view the Visual Learning Animation or the Another Look Video.

MATH HELP AT HOME

Sample Additional Practice Exercise 1

Mark Xs on the counters to show how many counters to take away. Then write an equation to find the difference.

6 circles with 4 circles crossed out. Below is the sentence 6 take away 4 is 2 and the equation 6 minus 4 equals 2.

There are 6 counters in all. Mark an X on 4 of them to show 4 counters being taken away. Count how many counters are left: 2. To write this as an equation, write a minus sign between the numbers 6 and 4, write an equal sign, and write 2 for the difference.

HOME ACTIVITY

What's the Difference?

MATERIALS

Assorted Toys and Small Objects, Paper, Pencil

ACTIVITY

Have your child point to the difference in a number sentence on this page and explain the number. Then give your child 4 toys and help him or her tell a subtracting story. Ask your child to find the difference. Repeat with other numbers and objects.