Addition With Number Lines

 $+$  Now, you try. Read the problems and use the number lines to help you solve them. Then, write a number sentence to go with each problem.

The Rogers family is going on a short trip. They leave their house and travel 22 miles and stop to eat breakfast. They get back in the car and travel another 16 miles to a rest stop. Then, they travel another 12 miles to get to the zoo. How many miles did the Rogers family drive to get to the zoo?

Which number sentence below gives the correct answer?

• 22 +16 -12

• 22 - 16 - 12
  
  

• 22 - 16 + 12

• 22 + 16 + 12

John is building a fence. The first hour he built a 14 foot section of fence. The second hour he built a 23 foot section of fence. The third hour he built a 20 foot section of fence. How long was the fence that John built in 3 hours?

Which number sentence gives the correct answer?

• 3 + 23 + 14

• 23 + 20 + 14

• 23 - 3 + 20

• 14 - 23 - 20

Write a number sentence and solve each problem.

To raise money for a new science lab, Martinez Elementary is selling T-shirts and hats with the school's name on it. They sell 73 T-shirts and 29 hats. How many more T-shirts did they sell than hats?

• 73 + 23 =

• 73 + 29 =

• 73 - 29 =

• none of these

The kitchen staff has 66 containers of skim milk and 41 containers of chocolate milk chilling in the fridge. If they expect 100 students to order skim milk, how many more cartons of skim milk do they need?

• 66 + 41 = 100

• 100 - 41 = 66

• 66 - 41 = 100

• 100 - 66 = 34

1. A group of friends had money to spend at the store on summer toys. They bought bags of water balloons and bubbles. Each bag of water balloons cost $2.00 and each bottle of bubbles cost $1.00. They purchased 3 bags of water balloons and 5 bottles of bubbles. How much money did they spend?

To prepare for swim team tryouts, Leann swam in the pool. On Monday, she swam for 24 minutes. On Tuesday, she swam for 18 minutes. On Wednesday, Thursday, and Friday, she swam for 30 minutes each day. How many minutes did Leann swim this week?

There were 34 people at the barbecue. 19 people are adults, and they ate hamburgers. The rest of the people are kids. If each kid ate 2 hot dogs, how many hot dogs were eaten?

On a beautiful day, there are 65 cars in the beach parking lot. 26 more cars parked in the parking lot before noon, but 17 cars left. How many cars are in the beach parking lot?

Gracie and Eleanor played in the ocean. Their mom said they could play in the water for 45 minutes. First, they jumped into the waves for 13 minutes. Then, they foated on their backs for 7 minutes. How many more minutes can they play in the ocean?

There are six crackers in each package. If the family brought seven packages on the road trip and had 4 crackers leftover, how many crackers did they eat?