Represent the Composition of 10 Ones

Examples and solutions to help Grade 2 students learn how to use manipulatives to represent the composition of 10 ones as 1 ten with two-digit addends.

Common Core Standards: 2.NBT.2, 2.NBT.1, 2.NBT.3, 2.MD.8

New York State Common Core Math Grade 2, Module 4, Lesson 6

Worksheets for Grade 2

NYS Math Grade 2 Module 4 Lesson 6

Application Problem

Mr. Wally’s class collects 36 cans for the recycling program. Then, Azniv bring in 8 more cans. How many cans does the class have now?

Lesson 6 Homework

1. Solve using mental math if you can. Use your place value chart and number disks to solve those you cannot do mentally.
   a. 4 + 9 = _____
   30 + 9 = _____
   34 + 9 = ______
   34 + 49 = ______
2. Solve the following problems using your place value chart and number disks, composing a ten when necessary.
   a. 21 + 9 = _____
   22 + 9 = ______
   i. 59 + 34 = _____

Solve using a place value chart.
3. Melissa has 36 more crayons than her brother. Her brother has 49 crayons. How many crayons does Melissa have?

5. Frank’s mother gave him $25 to save. If he already had $38 saved, how much money does Frank have saved now?

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