# Section D: Practice Problems Different Ways to Make a Number

## Section Summary

Details

We made two-digit numbers with different amounts of tens and ones.

Each of these representations shows 37.

We compared two-digit numbers that were made with tens and ones in different ways.

5 tens 2 ones and 12 ones 3 tens

## Problem 1 (Lesson 19)

1. Circle 2 pictures that show 46.

2. Show a different way to make 46.

## Problem 2 (Lesson 20)

Show 4 different ways you can make 35 using tens and ones.

## Problem 3 (Lesson 21)

Fill in each blank with , , or to make the equation true.

1. $\phantom{\rule{0.167em}{0ex}}79$

2. $\phantom{\rule{0.167em}{0ex}}20+25$

3. $\phantom{\rule{0.167em}{0ex}}35$

## Problem 4 (Exploration)

Andre said he is thinking of a 2-digit number.
He makes the number from tens and ones in 8 different ways.
In one way, there is 1 more ten than there are ones.
What is Andre’s number?
Show your thinking using drawings, numbers, or words.

## Problem 5 (Exploration)

1. Fill in the blanks so that all three descriptions show the same number.

• 7 tens + ones

• 2 tens + ones

• tens + 35 ones

2. Is there more than one way you can fill in the blanks?
Show your thinking using drawings, numbers, or words.

## Problem 6 (Exploration)

Exploration

Incomplete Number Riddles

Choose digits from the list to put in the blanks in the riddles.

3

6

5

4

2

1

Then solve the riddles.