Math Games

Year 2 - Using number skills

Standard 2.NS.1.3 - Practice solving addition sentences with two digit numbers.

Included Skills:

Calculate using mental and written methods
• Learners are able to:
- mentally add 10 or 20 to a given number up to 100
- mentally subtract 10 or 20 from a given number up to 100
- find small differences within 20 by using ‘counting on’ strategies
- use mental recall of number facts to 10 and place value to add or subtract larger numbers, e.g. 24 + 4, 30 + 5, 34 + 10
- find a small difference between two numbers by counting on, e.g. 44 - 28 = ??
- solve one- and two-step problems that involve addition and subtraction, multiplication and simple division including missing number problems, e.g. 40 - ?? = 19
- use partitioning strategies to double and halve 2-digit numbers
- understand that multiplication is repeated addition, e.g. 2 + 2 + 2 is the same as ‘three twos’
- add/subtract 9 or 11 from given number by adding/subtracting 10 and adjusting
- understand and use mathematical symbols for addition, subtraction, multiplication, division and equals
- understand and use the different mathematical terms for addition, subtraction, multiplication, division and equals, e.g. find the total, share, goes into