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Unit 6, Lesson 11

Add a multiple of 10 to any two-digit number within 100.

EngageNY 60 min(s)

In this lesson, students add a multiple of 10 to any two-digit number, such as 64 + 30. While some students may initially apply their ability to mentally add 10 by counting on by tens (64, 74, 84, 94), students also decompose 64 into 60 and 4 to solve, as shown to the right.

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Other lessons from Unit 6 in Grade 1 by EngageNY

Previous Lesson

Unit 6, Lesson 10

Add and subtract multiples of 10 from multiples of 10 to 100, including dimes.

60 min(s)

Next Lesson

Unit 6, Lesson 12

Add a pair of two-digit numbers when the ones digits have a sum less than or equal to 10.

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