Choosing a Reasonable Estimate for a Product Worksheet Download
Free 4th Grade (4nbt5) math worksheets on Choosing a Reasonable Estimate for a Product. Each worksheet has 12 problems with an answer key and are ideal for teachers and homeschooling. You can download the PDF, create a set of flash cards or set it up for online learning.
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About this worksheet
Each worksheet has 12 problems choosing the most reasonable estimate for a product.
This worksheet asks children to judge which estimate is the right size for a product, which is what estimation is really for. Each wrong choice comes from a specific mistake - an answer a place value too small, one a place value too large, or the two rounded factors added instead of multiplied - and every option is an order of magnitude from the answer, so nothing depends on exactly how a child rounded. Both factor shapes named in the standard are covered. Sheets can be customized, turned into flash cards, or assigned for online learning.
Student objectives
- Judge whether an estimate is the right size for a product.
- Round both factors to decide roughly how large a product should be.
- Notice when an answer is off by a place value or came from adding instead of multiplying.
Everyday practice
- Before working out a total, say roughly how big the answer should be.
- Check a calculator answer against a rough estimate to catch a mistyped digit.
- Decide whether a price for a number of items sounds about right.