Mathematics - Addition and Subtraction - Subtraction within 20 - Subtracting Through 10

5 steps: (1) Review: 8-3=5 (within 10, easy!). (2) What about 15-8? Strategy: First subtract down TO 10, then subtract the rest. 15-5=10, then 10-3=7. So 15-8=7. (3) Another way: Think addition! 8+?=15. If you know 8+7=15, then 15-8=7. (4) Show both strategies on number line. (5) Practice 3 examples

Edodovivmagarwal
Mathematics - Addition and Subtraction - Subtraction within 20 - Subtracting Through 10
Log in

Preparing your experience...

Loading scripts and resources

Comments (0)

0/5000

Comments are reviewed before appearing publicly.

About this Experience

Mathematics - Addition and Subtraction - Subtraction within 20 - Subtracting Through 10

vivmagarwal
vivmagarwalJan 29, 2026

Description

5 steps: (1) Review: 8-3=5 (within 10, easy!). (2) What about 15-8? Strategy: First subtract down TO 10, then subtract the rest. 15-5=10, then 10-3=7. So 15-8=7. (3) Another way: Think addition! 8+?=15. If you know 8+7=15, then 15-8=7. (4) Show both strategies on number line. (5) Practice 3 examples

Details

MathematicsAddition and SubtractionClass 1, Class 1, PYP Grade 1, Stage 2, Grade 1

Engagement

12

Likes

0

Remixes

0

Comments

Browse all experiences