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Year 3 - Number and Algebra

Standard 3.OA.1.1 - Solve subtraction word problems with numbers up to 1000.

Included Skills:

Number and place value
Investigate the conditions required for a number to be odd or even and identify odd and even numbers
- identifying even numbers using skip counting by twos or by grouping even collections of objects in twos
- explaining why all numbers that end in the digits 0, 2, 4, 6 and 8 are even and that numbers ending in 1, 3, 5, 7 and 9 are odd
Recognise, model, represent and order numbers to at least 10 000
- placing four-digit numbers on a number line using an appropriate scale
- reproducing numbers in words using their numerical representations and vice versa
Apply place value to partition, rearrange and regroup numbers to at least 10 000 to assist calculations and solve problems
- recognising that 10 000 equals 10 thousands, 100 hundreds, 1000 tens and 10 000 ones
- justifying choices about partitioning and regrouping numbers in terms of their usefulness for particular calculations
Recognise and explain the connection between addition and subtraction
- demonstrating the connection between addition and subtraction using partitioning or by writing equivalent number sentences
Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation
- recognising that certain single-digit number combinations always result in the same answer for addition and subtraction, and using this knowledge for addition and subtraction of larger numbers
- combining knowledge of addition and subtraction facts and partitioning to aid computation (for example 57 + 19 = 57 + 20 ï¿½ 1)
Recall multiplication facts of two, three, five and ten and related division facts
- establishing multiplication facts using number sequences
Represent and solve problems involving multiplication using efficient mental and written strategies and appropriate digital technologies
- writing simple word problems in numerical form and vice versa
- using a calculator to check the solution and reasonableness of the answer

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