Subtraction

Subtract numbers under 10.

Draw pictures to represent math problems under 10.

Select the math problem that matches the image shown.

Fluently add and subtract numbers up to 5.

Find the whole number that solves the equation. Practice both addition and subtraction.

Practice addition and subtraction under 100.

Practice Subtraction with Word Problems Under 20.

Practice subtraction. Understand subtraction as an unknown-addend problem.

Use addition and subtraction to solve word problems up to the number 20.

Fluently add and subtract within 20 using mental strategies. CCSS.Math.Content.2.OA.B.2

Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

Practice for CCSS.Math.Content.1.OA.C.6 Add and subtract within 20, demonstrating fluency for addition and subtraction within 10.

CCSS.Math.Content.1.OA.D.7 Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.

Practice for CCSS.Math.Content.1.OA.D.8. Determine the unknown whole number in an addition or subtraction equation relating three whole numbers.

Practice CCSS.Math.Content.1.NBT.C.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.

Practice for CCSS.Math.Content.1.NBT.C.6 Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90 (positive or zero differences), using concrete models or drawings and strategies.