Subtraction Horizontal Within 20
Arithmetic Drill · answer format: Number
subtraction within 20 worksheets
Subtraction Within 20 Worksheets and Online Practice
Subtraction facts can be solved by counting back, using a number line, or asking what addend is missing.
Skill routine
Subtract by counting back or thinking addition
- Start with the whole amount.
- Count back the amount being taken away.
- Check with the related addition fact.
Practice types
What this page can generate next.
Subtraction Missing Number Within 20
Arithmetic Drill · answer format: Number
Subtraction Word Problems Within 20
Word Problem · answer format: Number
Common mistakes
Common subtraction mistakes
Subtraction errors often happen when students reverse the numbers, count incorrectly, or misunderstand regrouping.
Subtracting the smaller digit from the larger digit in each column
Reversing the whole and the part
Coverage