Section C: Practice Problems Addition and Subtraction Expressions

Section Summary

Details

In this section, we used numbers and symbols to show when things are added and when things are subtracted, or taken away.

We matched expressions to story problems and drawings.

2 rows of circles. Top, 5 circles. Below, 3 circles. 6 crossed out.

Drawing. 2 circles. 1 circle.

We used our fingers, objects, and drawings to find the value of expressions.

Fingers showing 4.
Fingers showing 2.
2 groups of dots. Red, 4. Yellow, 2.
6 dots. 4 black. 2 white.

Problem 1 (Lesson 14)

There are 5 red apples in the bowl.
Lin puts 3 green apples in the bowl.

  1. How many apples are in the bowl?

  2. Circle the expression that matches the story problem.

Problem 2 (Lesson 15)

Draw a line from each expression to the matching drawing.

  1. 6 circles. A line. 2 circles.
  2. 5 circles. 2 crossed out.
  3. 5 circles. A line. 2 circles.
  4. 6 circles. 3 crossed out.

Problem 3 (Lesson 16)

Find the value of each expression.
Show your thinking using objects, drawings, numbers, or words.

Problem 4 (Lesson 17)

Find the value of each expression.
Show your thinking using objects, drawings, numbers, or words.

Problem 5 (Exploration)

  1. Circle the expression that shows 8.

  2. What other expressions can you find that show 8?

Problem 6 (Exploration)

2 circles. A line. 6 circles.

Tell a story that this picture might represent.