Grade: 2, Topic(s): mental number line

## Purpose

To find the nearest ten(s) of a given two-digit number and/or three-digit number

None

Call out a number up to 85 and ask children to name the two tens that sandwich* that *number. When the children seem ready, ask them to name the *nearest *ten. For an added challenge, move to naming the *nearest* ten with numbers greater than 100. Keep practice fast-paced and fun!

Part 1 asks children to name the two tens that sandwich a number. Part 2 builds to naming the *nearest *ten, using numbers less than 100. The extension moves to naming the *nearest* ten with numbers between 100 and 200.

I’m going to stay a number and you name the two tens that sandwich that number.

Examples:

- 34 (between 30 and 40)
- 81 (between 80 and 90)
- 69 (between 60 and 70)
- 16 (between 10 and 20)
- 55 (between 50 and 60)
- 27 (between 20 and 30)
- 52 (between 50 and 60)
- 76 (between 70 and 80)
- 38 (between 30 and 40)
- 83 (between 80 and 90)

*If children need more practice or are enjoying their mastery, repeat. If children are ready to move on, go to Part 2.*

I’m going to stay a number and you name the *nearest* ten.

Examples:

- 34 (nearest ten is 30)
- 71 (nearest ten is 70)
- 59 (nearest ten is 60)
- 16 (nearest ten is 20)
- 54 (nearest ten is 50)
- 28 (nearest ten is 30)
- 12 (nearest ten is 10)
- 82 (nearest ten is 80)
- 38 (nearest ten is 40)
- 22 (nearest ten is 20)

*If children need more practice, repeat. Or, when children seem excited for a new challenge, move to the extension.*

I’m going to stay a number greater than 100 and you name the *nearest* ten.

Examples:

- 137 (nearest ten is 140)
- 146 (nearest ten is 150)
- 159 (nearest ten is 160)
- 106 (nearest ten is 110)
- 103 (nearest ten is 100)
- 128 (nearest ten is 130)
- 152 (nearest ten is 150)
- 182 (nearest ten is 180)
- 137 (nearest ten is 140)
- 196 (nearest ten is 200)

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