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Beginner
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Grade 1 · Spring
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Subtraction with regrouping within 20
Subtraction with regrouping within 20
3 Knowledge points
Estimated time · 22 min
0%
01
Subtracting 9 from a teen
Break ten, or think additively
8 min
Continue
02
Subtracting 8, 7 and 6 from a teen
Breaking ten again and again
7 min
Continue
03
Subtracting 5, 4, 3 and 2 from a teen
Completing regrouping subtraction
7 min
Continue