Estimating and Mental Math

Quick maths in your head with Millie and her kitten Biscuit: number bonds to 10 and 100, adding 9 and 99 with a round number, doubles and near doubles, counting on and back by 10s and 100s, estimating sums and differences by rounding, and spotting an answer that can’t be right.

Every card is a little story: “Zoe has 46 stickers and buys a sheet of 9 more. How many stickers does she have?” Each trick has its own world and a big seek-and-find picture to explore.