Numbers and place value · Usually met around P1
Numbers to 20
From “Counting, reading and writing to 20” to “Number bonds to 20”, step by step, each skill with its methods, worked examples and answers.
Skills in this topic, easy to hard
- Counting, reading and writing to 20Ring a group of 10, then count the rest
- SubitisingKnow the pattern: 5 is four corners and the middle
- Counting on and counting backOn: 1 more each time. Back: 1 less each time
- Ordinal numbers (1st, 2nd, 3rd)Check which end you count from; the 4th has 3 in front
- Odd and even numbersLook at the ones: 0, 2, 4, 6, 8 is even
- Splitting and making numbersKnow one part: count on from it to the whole
- Number bonds to 20Look at the ones: reuse the pairs to 10
Practise it in the game →Numbers to 20 · Free to start, unlimited questions, no downloadAll maths topics →