Skills Covered

How to Use This Pack

Six pages of subtraction practice. Page 1 is a timed drill of 36 subtraction facts within 20 in digit boxes; page 2 mixes adding and subtracting, so students have to watch the signs. Page 3 starts with a row to answer, then four rows with a missing number in a box. Page 4 shows equal jumps back, like 25, 17, 9, and asks for the start number and how much is subtracted each time. Pages 5 and 6 practice subtracting with 7 and with 9, then end with two fact family triangles.

In the Classroom

Run the timed pages as a quick warm-up and let students track their own times. Before page 2, remind everyone to circle or point to the sign first. The jump and fact family pages make a good small-group lesson on how adding and subtracting are related.

At Home

Time page 1 one day and page 2 the next. If a subtraction fact is hard, turn it into adding: for 15 minus 9, ask what goes with 9 to make 15.

Tips for Success

• Look at the sign before you solve
• Think addition: 15 − 9 is the number that goes with 9 to make 15
• The first jump box is an example, already filled in
• Check a missing number by putting it back in the fact

Common Core Standards Alignment

This pack supports the following Common Core State Standards for Mathematics:

• 1.OA.C.6 - Add and subtract within 20, demonstrating fluency for addition and subtraction within 10
• 2.OA.B.2 - Fluently add and subtract within 20 using mental strategies
• 1.OA.B.4 - Understand subtraction as an unknown-addend problem
• 1.OA.D.8 - Determine the unknown whole number in an addition or subtraction equation relating three whole numbers