Estimating Sums
Examples, solutions, and videos to teach Grade 3 students how to estimate sums by rounding and by compatible numbers.
Rounding to Estimate Sums
Estimate Sums
How to estimate sums, by using “Compatible” numbers, and by Rounding?
Estimating Addition and Subtraction Problems
This video explains how to round whole numbers to estimate addition and subtraction problems.
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Fraction Concoction Game:
Master fractions in the lab: mix, add, and subtract beakers to create the perfect concoction!
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Complete fact families and master the link between addition & subtraction and multiplication & division.
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Clear the board by matching number pairs that sum to ten in this garden-themed mental math puzzle.
Online Addition Subtraction Game:
Practice your addition and subtraction skills to help the penguin find its mummy.
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