MathematicsBeginner

Subtracting 9 from a teen

Break ten, or think additively

Estimated time · 8 min 10 Content blocks

Core concepts

Formulas

13−9=(10−9)+3=1+3=413-9 = (10-9)+3 = 1+3 = 4

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Exercises

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Prerequisites

Subtraction8 minMaking ten, and adding to 98 min

Related knowledge points

Subtracting 8, 7 and 6 from a teen7 min
Practice set
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