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Monkey Business Adding with an Unknown Number Activity

Monkey Business Adding with an Unknown Number Activity preview
Monkey Business Adding with an Unknown Number Activity preview

Look Inside · 9 pages

Monkey Business cover for solving addition problems with an unknown, with directions to cut, match cards and do a worksheet
Read the directions aloud before setting up the matching game
Missing addend equation cards: students find the unknown in 7 + ? = 10, 10 + ? = 20, ? + 4 = 9 and 9 + ? = 18
First set of monkey cards to cut out for the matching center
Unknown addend equation cards: students solve 5 + ? = 11, ? + 4 = 11, 7 + ? = 15 and ? + 9 = 11 to find each missing number
Second set of cards; mixes the unknown in first and second position
Monkey equation cards with a missing addend: students solve ? + 8 = 12, ? + 3 = 13, 10 + ? = 12 and 4 + ? = 15
Third set of cut-apart cards for partner or small-group play
Addition cards with an unknown addend up to 20: students solve 15 + ? = 16, 12 + ? = 15, 16 + ? = 20 and ? + 10 = 19
Fourth card set, with sums in the upper teens and 20
Final missing-number equation cards: students find the unknown in ? + 3 = 7, ? + 8 = 13, ? + 11 = 15 and 7 + ? = 17
Last set of equation cards to complete the 20-card deck
Sun answer cards to cut out, showing 3, 10, 5, 9, 6, 7, 8, 2, 4, 10, 2 and 11 for students to match to the equation cards
Print on cardstock; students pair each sun with an equation
Remaining sun answer cards numbered 1, 3, 4, 9, 4, 5, 4 and 10, which students match to the missing addend in each equation
Completes the answer deck; check that all 20 suns are cut
Missing Number worksheet: students write the unknown addend in 20 equations such as 7 + __ = 10 and __ + 3 = 13
Follow-up practice or exit check after the card match
Attributes
Subject

Math, Addition and Subtraction, Addition

Grades

Preschool, Grade 1, 2

Types

Activities

File

PDF

Editable
No
Author
Have Fun Teaching
Rating
Add To Collection
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About This Product

This activity is perfect for helping your students practice finding the unknown whole number in addition equations up to 20. This is a great way to help your students improve their math skills.

What's Included

Contains 1 Product File

Resource Tags

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