Addition and Subtraction are Opposites

Addition and Subtraction are Opposites - Year 1 Year 1 maths programme of study - Number (addition and subtraction): represent and use number bonds and related subtraction facts within 20 add and subtract one-digit and two-digit numbers to 20 This KS1 maths teaching resource introduces children to the inverse relationship between addition and subtraction while practising adding and subtracting within 20 as per the year 1 maths programme of study (Number - addition and subtraction). This colourful animated PowerPoint presentation includes What are opposites explanation An explanation of why addition and subtraction are opposites Link to an addition and subtraction video clip 1 activity with accompanying worksheet 1 further worksheet with answers