I teach Y4/5/6 for maths, with abilities ranging from 2c to 5b. I'm planning for next week and I'm going round in circles with maths! I'm on the second week of A2, but we only have 2 weeks this half term for it. Last week, we looked at decimal numbers: place value, positioning on number lines, rounding and counting in decimal steps to create/continue sequences. This week, we really need to work on written methods for + and - On Monday, LA will use an expanded written column method to add pairs of three-digit numbers; MA will begin with expanded column method and then progress to the compact column method to add pairs of three-digit and four-digit numbers. HA will use the compact column method to add numbers with 1,2 and 3 decimal places. So far so good! On Tuesday, we really need to move on to subtraction using a written method. Only the HA are really very secure with this, so we'll do 1 day on whole numbers and then, if getting more secure, 1 day on £.p My question is, which written method is most appropriate as a starting point? Everybody (including me, if I'm perfectly honest) seems to find the counting up column method quite confusing, but the LA, especially the LA Y4s, won't get compact decomposition. I'm tearing my hair out here! Any ideas?