Estimation is the key to success in Whole Number Operations!
This lesson teaches students to round to the greatest place and estimate the product of any multiplication problem. Since I began teaching this lesson prior to the rest of whole number multiplication (2 x 2, 3 x 2, etc) our mastery has drastically improved.
Students are given problems like 7 x 372 or 565 x 39 and practice solving 7 x 400 = 2,800 and 600 x 40 =24,000 instead. Once they've mastered this skill, it enables them to check their answers for accuracy for the remainder of our time on multiplication.
Love this lesson? It goes great when taught with this one:
Mentally Multiplying by Multiples of 10
The lesson includes:
-Teacher Lead Problem Set
-Partner Problem Set
-2 pages of Independent Practice
-Challenge problems for early finishers
-Answer Keys for Everything
This is a great lesson to teach before 4th or 5th grade multiplication or as a review lesson for 6th grade!
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The Number Diva
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