# Lesson 18 Money Problems

Let’s solve problems with money.

## Warm-up How Many Do You See: Groups of Coins

How many coins do you see? How do you see them?

## Activity 1 Shop for School Supplies

items | cost |
---|---|

pack of pencils | |

pencil sharpener | |

eraser | |

pens |

## Problem 1

Lin has these coins:

How much money does Lin have for supplies?

If Lin buys an eraser, how much money will she have left? Show your thinking.

## Problem 2

Diego has these coins:

How much money does Diego have for supplies?

If Diego buys a pack of pencils, how much money will he have left? Show your thinking.

## Activity 2 Shop with a Dollar

Show your thinking for each problem.

supplies | cost |
---|---|

notebooks | |

colored pencils | |

pencil box | |

glue stick |

## Problem 1

Clare wants to buy a pencil box and colored pencils.

How much money will it cost?

Clare has $1. How much will she have left?

## Problem 2

Tyler wants to buy a notebook and a pencil box. He has $1. How much will he have left?

## Problem 3

Andre has $1. He wants to buy a glue stick, a pencil box, and colored pencils. Does Andre have enough money?

## Practice Problem

## Problem 1

Mai has 92 cents. She gives Lin 38 cents. How many cents does Mai have now?