Subtraction within 10, 20 & 100 Quiz
About this quiz
Subtract within 10, 20, or 100, with answers that are never below zero.
- Choose a limit of 10, 20, or 100 (20 by default), and whether 0 can appear.
- Answer 10, 20, or 30 flash cards, one at a time, while a timer runs.
- At the end, review your score, time, and every mistake, then practice just the cards you missed.
- For Grades 1–2 · Common Core 1.OA.C.6, 2.OA.B.2, 2.NBT.B.5
Worked example
15 − 7 = 8
Think of the addition fact: 7 + 8 = 15.
Tip: Count up from the smaller number to the larger one.
Practice the same skill
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Subtraction within 10, 20 & 100 practice online
Solve a set at your own pace and check each answer.
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Subtraction within 10, 20 & 100 worksheets with answers
Print a fresh worksheet with an answer key.