Add and subtract numbers mentally 2 - PowerPoint

This Maths Teaching Resource is designed to help students improve their mental arithmetic skills, specifically focusing on addition and subtraction. The presentation starts by setting the learning objective: to practice adding and subtracting numbers mentally. A variety of exercises are provided to encourage students to use their mental maths abilities. Initially, they are prompted to add two random numbers together, using a number grid for assistance if needed. This is followed by an opportunity to select pairs of numbers and perform the same addition task independently.

The resource also delves into the concept of place value, using three-digit numbers as examples. Students learn how to partition numbers into hundreds, tens, and ones to facilitate easier mental addition and subtraction. They are guided through the process of adding numbers by combining the hundreds, tens, and units separately and then combining the totals. Similarly, subtraction is taught by partitioning and then taking away the hundreds, tens, and ones, before adding the answers together. To reinforce these skills, the resource includes a series of mental calculations for the students to solve, with the aid of jottings if necessary. Additionally, an 'Orbit addition and subtraction' game is introduced, which involves following the direction of arrows to add or subtract numbers. For a more interactive experience, the 'Addition and Subtraction Ace' game encourages students to play with a deck of cards, adding or subtracting two-digit numbers from their score, aiming to reach a total of 1,000 points.