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Toy Train Cars: Turn-Around Facts and Grouping worksheet preview

Worksheet

Toy Train Cars: Turn-Around Facts and Grouping

Grade 1 toy train practice with the order and grouping properties of addition: turn-around facts, making a ten, and adding doubles first.

Grade 1MathInteractive · Printable

Aligned to1.OA.B.3

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What’s included

  • Single worksheet
  • Auto-graded online
  • 1 Common Core standard
  • Printable answer key
  • 11 questions
  • Classroom-ready

Details

Format
Interactive · Printable
Grade
Grade 1
Subject
Math
Question types
Fill in the blank, Multiple choice, Matching, Sorting, Short answer

About this worksheet

What students practice

  • Students use turn-around facts to show that changing the order of addends keeps the same sum.
  • Students group two addends first to make a ten or a double, then add the third addend.
  • Students decide if two number sentences are equal by using order and grouping.

How to use

Model the first train with real or drawn cars, then flip it to show the sum stays the same. Let students finish the sheet and explain which numbers they grouped first.

Curriculum

Common Core standard covered

1.OA.B.3

Use properties of addition, such as order and grouping, to add.

Preview

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Name Date

Toy Train Cars: Turn-Around Facts and Grouping

Change the order or the grouping to add an easier way.

Flip the Train

You can add numbers in any order. The sum stays the same.

1.
Eli's train has a car with 3 bears and a car with 8 bears. Then he turns the train around, so the car with 8 bears comes first.

3 + 8 =  
8 + 3 =  

2.
Two toy trains start at 0 on the track. Train A moves 4 spaces, then 9 more spaces. Train B moves 9 spaces, then 4 more spaces.
01234567891011121314151617181920

Train A stops at  . Train B stops at  .

3.
Max wants to find 2 + 9 by counting on. He wants to count on as few times as he can. What should he do?
  • A. Start at 2 and count on 9 more.
  • B. Start at 9 and count on 2 more.
  • C. Start at 9 and count back 2.
4.
Write the turn-around fact for 9 + 6 = 15.

  +   = 15

Hook Two Cars First

Add two numbers first to make a ten or a double. Then add the last number.

5.
A train has 3 cars. They carry 2 ducks, 6 ducks, and 4 ducks. Add 6 + 4 first.

2 + 6 + 4 = 2 +   =  

6.
Another train carries 4 sheep, 7 sheep, and 4 sheep. Add the double 4 + 4 first.

4 + 4 =  
8 + 7 =  

7.
Fill in the missing number so both sides have the same sum.

9 + 4 + 6 = 9 +  
5 + 8 + 2 = 8 +  

8.
Each train has three cars. Make a ten first. Match each train to its easier problem.
  1. 3 + 8 + 2
  2. 4 + 6 + 7
  3. 9 + 5 + 5
  4. 1 + 9 + 8
  1. A. 10 + 8
  2. B. 3 + 10
  3. C. 9 + 10
  4. D. 10 + 7

Same Sum Check

Use order and grouping to decide.

9.
Is each number sentence true or false? Sort them.
5 + 9 = 9 + 57 + 2 = 7 + 33 + 10 = 10 + 36 + 8 = 8 + 52 + 4 + 8 = 2 + 126 + 4 + 5 = 10 + 6
TrueFalse
10.
Rina's train has cars with 6 toys, 7 toys, and 4 toys. Which train has the same number of toys as Rina's train?
  • A. 6 + 7 + 5
  • B. 10 + 6
  • C. 4 + 7 + 6
  • D. 7 + 4
11.
Nadia says 7 + 6 + 3 is the same as 10 + 6. Is she right? Find the sum and tell how you know.

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