Finding a Missing Number with Inverse Operations Worksheet Download
Free 5th Grade (5nbt5) math worksheets on Finding a Missing Number with Inverse Operations. Each worksheet has 18 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 18 problems using an inverse operation to find a missing multi-digit number.
This worksheet gives an equation with one multi-digit number missing and asks the student to find it using the inverse operation. The related equation sheets already on the site are grade 3 single digits, where the inverse is a memory exercise; at four digits it stops being one, because nobody knows 6,153 minus 2,847 by heart and the student has to recognise that a missing addend is a subtraction. The unknown sits first on subtraction and division problems on purpose, since that is the arrangement the inverse actually solves. Sheets can be customized, turned into flash cards, or assigned for online learning.
Student objectives
- Use addition to find a missing minuend.
- Use multiplication to find a missing dividend.
- Recognize which operation undoes another.
Everyday practice
- Check a subtraction by adding it back.
- Find a missing factor by dividing.
- Say which operation undoes the one in the problem.