The penultimate in our Year 3 Maths programme which starts with some tricky mental arithmetic. By this stage children should have a variety of mental strategies that they can use to calculate quickly and efficiently. The week's work continues with some work on estimating numbers on a number line.To make it trickier the number lines vary in length and also vary in starting and finishing numbers, so a great deal of care needs to be taken. Being able to round numbers is crucial to being able to make quick estimates of the answers to calculations. We have  a selection of rounding activities, rounding to the nearest 10 . Another activity which children are expected to be able to do is partition numbers. This means splitting the number up, for example: 357 = 300 + 57 357 = 300 + 50 + 7 357 = 300 + 40 + 17 etc. This, of course, is what children have to do when carrying out written subtraction in the future. There are also pages on change from £2.00 and multiplication and division - a pretty hard week's activities! Go to Week 35 of the Year 3 maths programme