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In this JC mother uses an approximate number for the total cost. She explains the concept of rounding off numbers to JC. http://www.youtube.com/watch?v=CaP61n1r1TI

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Rounding Numbers anchor chart... The Third Grade Way @Erin B B B Bradd , good chart to make to bridge between 10s & 100s

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Place Value Task Cards Rounding Numbers from Our Wonderful Journey on TeachersNotebook.com (42 pages)

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Here's a fun game for practicing rounding skills.

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from Teachers Pay Teachers

### Ramp Up to Rounding: Number Line Task Cards

Get 56 number lines that can be used as wipe-on and wipe-off task cards!These task cards are perfect for teaching 3.NBT.1 and 4.NBT.3. The number line task cards can be used to prepare students to round to various places. On each task card students are ask to find the nearest multiples of ten, hundred, thousand, ten thousand, or hundred thousand.

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from Teachers Pay Teachers

### Personal Reference Rings {Mini Anchor Charts}

These personal reference rings are such an awesome tool to help young learners as they work independently. One teacher writes, "This product is sure to inspire our children to take more responsibility for their own education and at the same time provide the scaffolding they need to meet academic challenges." \$

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from mrelementarymath.blogspot.com

### Rounding 101 - Number Lines, Games and More

Rounding can be a challenging skill. Help your students better understand rounding, to the nearest 10 and 100, using interactive number lines, hands-on rounding activities, games and independent practice.

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This FREE place value activity for first and second graders may be completed with the whole class (typically with partners), a small group, or as an independent station. There are five different recording sheets addressing skills in counting and grouping by tens and ones, base ten, expanded form, rounding to the nearest ten, and counting by tens off a decade number.

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MrNussbaum.com was developed with the idea that crucial concepts, themes, ideas, and fact sets taught in the classroom can be enhanced over the internet through interactivity. Furthermore, for teachers to have a reliable k -8 internet site to use in the computer lab or in the classroom, that likely covers one or many themes currently being taught.

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Teacher Trap: Rounding Rules - students write down the 'tens' on either side of the number and circle the closer one.

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