# Worksheet: Modeling Two-Step Addition and Subtraction Problems

In this worksheet, we will practice deciding which operations are needed to solve a two-step word problem by drawing a model if necessary and writing equations to record the solution with numbers up to 1000.

**Q1: **

A mailman has to deliver letters to 76 houses. In the first street, he delivered to 28 houses, and, in the next street, he delivered to 15 houses.

Pick one way to calculate the number of houses that are left.

- AHe has delivered to houses. So, there are houses left.
- BHe has delivered to houses. So, there are houses left.
- CHe has delivered to houses. So, there are houses left.
- DHe has delivered to houses. So, there are houses left.
- EHe has delivered to houses. So, there are houses left.

**Q5: **

Amelia had $209 in her bank account. She wrote checks for $95, $69, and $86 and made two deposits of $22 and $79. Determine the amount of money she had after these transactions, and find how it compares to the original balance.

- AThe current balance is $60, and it is $149 less than the original balance.
- BThe current balance is $142, and it is $351 less than the original balance.
- CThe current balance is $142, and it is $351 more than the original balance.
- DThe current balance is $16, and it is $193 less than the original balance.
- EThe current balance is $60, and it is $149 more than the original balance.

**Q6: **

A child was playing a computer game in which he collects coins. The game consists of four levels. He collected 114 coins in the first level, 106 coins in the second, 94 coins in the third, and 87 coins in the fourth. Find the total amount of coins he collected while playing the game.

**Q7: **

A farmer planted a number of trees for 3 months. He planted 102 trees in January, 77 trees in February, and 117 trees in March. Find the total number of trees he planted in the 3 months.

**Q8: **

A young man travelled to three cities by bike. It took him 198 minutes to travel to the first city, 179 minutes to travel to the next city, and 216 minutes to travel to the final city. Find the total duration of his trip in minutes.

**Q9: **

A garden has 217 apple trees, 394 mango trees, and 194 orange trees. How many trees are there in the garden?

**Q10: **

Rearrange the digits of 291 and 675 so that their sum has the greatest value.

- A129, 765
- B921, 567
- C129, 567
- D921, 765

**Q11: **

Rearrange the digits of 792 and 249 so that their sum has the smallest value.

- A972, 249
- B279, 942
- C279, 249
- D972, 942