Section C: Practice Problems Make and Break Apart 10

Section Summary

Details

In this section, we found many different ways to make 10.

We used a 10-frame and our fingers to show numbers and figure out how many more are needed to make 10.

Ten frame, 4 counters.
Ten frame, 4 yellow counters, 6 red counters.

There are 4 counters.
We need 6 more counters to make 10.

Fingers showing 9.

There are 9 fingers.
We need to put up 1 more finger to make 10.

Fingers showing 10.

We used equations to show different ways to make 10.

Problem 1 (Lesson 10)

How many counters are there?

  1. Ten frame. 8 counters.
  2. Ten frame. 6 counters.
  3. Ten frame. Full.

Problem 2 (Lesson 10)

Draw a line from the fingers to the ten-frame that shows the same number.

  1. Fingers showing 6.
  2. Fingers showing 8.
  3. Fingers showing 9.
  1. Ten frame, 8 counters.
  2. Ten frame, 9 counters.
  3. Ten frame, 6 counters.

Problem 3 (Lesson 11)

Circle the equation that matches the 10-frame.

Ten frame. Full with 7 red counters, 3 yellow counters.

Problem 4 (Lesson 12)

Draw a line from each 10-frame to the equation it matches.

  1. Ten frame. Full with 5 red counters, 5 yellow counters.
  2. Ten frame. Full with 7 red counters, 3 yellow counters.
  3. Ten frame. Full with 8 red counters, 2 yellow counters.
  4. Ten frame. Full with red counters.

Problem 5 (Lesson 12)

Write a number to show how many counters are needed to fill the 10-frame.

  1. Ten frame, 5 counters.
  2. Ten frame, 9 counters.
  3. Ten frame, 2 counters.

Problem 6 (Lesson 13)

For each number, write the number you need to add to make 10.
Use a 10-frame and two-color counters if it helps you.

Problem 7 (Lesson 14)

Mai has a tower of 10 connecting cubes.
She snaps the tower into 2 parts and puts one part behind her back.
She shows her partner 3 cubes.
How many cubes is Mai hiding?
Show your thinking using drawings, numbers, words, or objects.

Problem 8 (Exploration)

Clare is playing What’s Behind My Back? She has a tower of 10 cubes.
She accidentally snaps the tower into 3 pieces.
She shows these two towers.

2 connecting cube towers. Blue, 5. Yellow, 3.

How many cubes does Clare have behind her back?

Problem 9 (Exploration)

Diego is playing What’s Behind My Back? He has a tower of 10 cubes.
He accidentally snaps the tower into 3 pieces.
He shows this tower.

Connecting cube tower, 3 cubes.

How many cubes could be in Diego’s other two towers?