HBS Math Support

Rounding

Videos

Round using linear model – Learn Zillion
Rounding – BrainPop
Round to nearest ten – Khan Academy
Round to nearest hundred – Khan Academy
Using a number line - Origo One
Rounding a number using a number line - MuchoMath
Rounding Video - Numberock

Rounding to nearest 10 (video) | Khan AcademyLearn to use a number line to round 2-digit numbers to the nearest ten.

Rounding to nearest 100 (video) | Khan AcademyLearn to use a number line to round 3-digit numbers to the nearest hundred.

Virtual Manipulatives

Number Line – Math Learning Center
Number Line – Didax

Number Line by The Math Learning CenterNumber Line helps students visualize number sequences and demonstrate strategies for counting, comparing, adding, subtracting, multiplying, and dividing.

Vocabulary

rounding
estimating
leading digit
front end estimation
reasonable

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