Hands On rounding Activity - ELEMENTARY MATH

Hands On

rounding Activity

with a number line

Completed Number Line

10

? 2014 Mr Elementary Math

Rounding Activity

with a number line

Materials to assemble number line

Number Line Printables Scissors

Tape or Stapler Color Circles

Markers or Highlighters

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10

Cut the number line in half

Staple to attach the number line ? 2014 Mr Elementary Math

Completed Number Line

Rounding Activity

with a number line

Directions for activity

Cut and assemble the number line using tape or a stapler. After the number line is assembled allow the students to work in groups and color the decades or multiples of ten (10, 20, 30) in alternating colors.

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Using color circles like the ones in the picture have the students take turns applying the same color circle under each number that rounds to 10, 20, 30, etc. While the students apply the color circles they should say:

" 11 rounds to 10 because it is 1 number away from 10." " 12 rounds to 10 because it is 2 numbers away from 10." " 13 rounds to 10 because it is 3 numbers away from 10."

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The students will continue to look at each number until they complete the entire number line.

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When students are finished with the number line, build in time for them to complete the rounding reflection sheet. A blank number line is also included so that you can generate any number line you

! 10 would like!

Note: When the students get to the number 15, they should notice that 15 is 5 numbers away 10 and 5 numbers away from 20. Since the number 15 is in the middle of two decades they should round to the higher decade.

Have students place color circles under each number

Color Circle Stickers

Notice how all the numbers that round to 10 are indicated with a red color circle.

? 2014 Mr Elementary Math

Completed Number Line

Rounding Activity

with a number line

IDEAS FOR game using number line

Students will roll 2 dice or number cubes. They will form a

number with the number cubes. Using the number cubes

below the number will be 64.

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Using the number line, the students will record and say:

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!

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64 rounds to 60 because it is 4

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numbers away from 60.

10

Students will record their information on the sheet.

? 2014 Mr Elementary Math

rounding GAME

with a number line

Name: _________________ Date: _________

Roll #1 Roll #2

My Statement

6

4

64 rounds to 60 because it is 4 numbers away from 60

__________ rounds to _________ because it is __________ numbers away from __________.

__________ rounds to _________ because it is __________ numbers away from __________. __________ rounds to _________ because it is

10 __________ numbers away from __________.

__________ rounds to _________ because it is __________ numbers away from __________.

__________ rounds to _________ because it is __________ numbers away from __________. __________ rounds to _________ because it is __________ numbers away from __________.

__________ rounds to _________ because it is __________ numbers away from __________.

__________ rounds to _________ because it is __________ numbers away from __________.

? 2014 Mr Elementary Math

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