Math Games

Year 1 - Using number skills

Standard 1.NS.1.3 - Solve addition equations involving 3 numbers up to 20.

Included Skills:

Calculate using mental and written methods
• Learners are able to:
- mentally recall ‘one more’ of a number within 20
- mentally recall ‘one less’ of a number within 20
- use ‘counting on’ strategies to add two collections, starting with the larger number, e.g. 8 + 5
- add and subtract numbers involving up to 10 objects
- use a range of strategies to mentally solve problems within 10
- solve one-step problems that involve addition and subtraction, including missing number problems, e.g. 7 + ¨ = 9, using concrete objects and pictorial representations
- use known facts to solve simple problems within 10, e.g. doubling and halving, number bonds
- use known number facts when adding three single digit numbers and realise addition can be done in any order
- understand and use the mathematical symbols for addition, subtraction and equals
- understand and use the different mathematical terms for addition and subtraction, e.g. add, combine, find the difference