AC9M4N08
Year 4
Mathematics
AC9M4N08 | Year 4 Mathematics: Number
Content Descriptor
Content descriptor use mathematical modelling to solve practical problems involving additive and multiplicative situations including financial contexts; formulate the problems using number sentences and choose efficient calculation strategies, using digital tools where appropriate; interpret and communicate solutions in terms of the situation
Strand
Number
Substrand
Number
This content descriptor sets out learning for Year 4 Mathematics. Use it to plan lessons and assessment with the Australian Curriculum v9.
Elaborations
- • Elaboration modelling and solving a range of practical additive problems using materials, part-part-whole diagrams and/or a bar model, and writing addition and/or subtraction number sentences, based on whether a part or the whole is missing; explaining how each number in their number sentence is connected to the situation
- • Elaboration modelling practical problems with division, interpreting and representing the situation using a diagram or array to represent what is unknown (the number of groups, or the number per group); writing a division number sentence to represent the situation and choosing an efficient calculation strategy
- • Elaboration modelling practical problems involving money, such as a budget for a large event, as requiring either addition, subtraction, multiplication or division and justifying the choice of operation in relation to the situation
- • Elaboration modelling and solving multiplication problems involving money, such as buying 5 toy scooters for \$96 each, using efficient mental strategies and written jottings to keep track if needed; for example, rounding \$96 up to \$100 and subtracting 5 \times\$4 = \$20, so 5 \times\$96 is the same as 5\times\$100 less \$20, giving the answer \$500 \space–\space \$20 = \$480
- • Elaboration modelling situations by formulating comparison problems using number sentences, comparison models and arrays; for example, “Ariana read 16 books for the readathon; Maryam read 4 times as many books. How many books did Maryam read?” using the expression 4 \times 16 and using place value partitioning, basic facts and an array, thinking 4 \times 10 = 40 and 4 \times 6 = 24, so 4 \times 16 can be written as 40 + 24 = 64
Plan a lesson from this content description.
Start freeAchievement standard statements this supports
- They use mathematical modelling to solve financial and other practical problems , formulating the problem using number sentences, solving the problem choosing efficient strategies and interpreting the results in terms of the situation.See it on the standard page →
- Students use their proficiency with addition and multiplication facts to add and subtract, multiply and divide numbers efficiently.See it on the standard page →