# 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)

Circle

**2**pictures that show 46.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

$\phantom{\rule{0.167em}{0ex}}}79$ $\phantom{\rule{0.167em}{0ex}}}20+25$ $\phantom{\rule{0.167em}{0ex}}}35$

## 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)

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

7 tens + ones

2 tens + ones

tens + 35 ones

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.

You can use cubes or other math tools to help you.

I have tens and ones. What number am I?

I have tens and ones. What number am I?

I have tens and 18 ones. What number am I?

I have tens and 25 ones. What number am I?