# Subtraction Problems using Ten as a Unit

Videos to help Grade 1 students learn how to solve subtraction problems using ten as a unit, and write two-step solutions.

Common Core Standards: 1.OA.1, 1.NBT.2a, 1.NBT.2b, 1.NBT.5

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Lesson Plans and Worksheets for Grade 1

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Common Core For Grade 1

New York State Common Core Math Module 2, Grade 1, Lesson 29

Lesson 29 Problem Set

Solve the problems. Write your answers to show how many tens and ones.
Show your solution in two steps:
Step 1: Write one number sentence to subtract from ten.
Step 2: Write one number sentence to add the remaining parts

1. 14 - 5 =
Lesson 29 Problem Set
4. This week, Maria ate 5 yellow plums and some red plums. If she ate 11 plums in all,
how many red plums did Maria eat?

Lesson 29 Homework
Solve the problems. Write your answers to show how many tens and ones
Solve. Write the two number sentences for each step to show how you take from ten. Remember to put a box around your solution and write a statement.
4. Eli read some science magazines. Then he read 9 sports magazines. If he read 18 magazines altogether, how many science magazines did Eli read?
6. Some children are at the park playing soccer. Seven are wearing white shirts. If there are 14 children playing soccer in all, how many children are wearing shirts that are another color?
Lesson 29 Word Problems
Isabelle had some presents left to open. If she received 13 presents and had already opened 8. How many presents does she still need to open?