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Multiplication and addition
This lesson explores the connection between multiplying a number by a decimal and the addition of the same number and decimal multiplied by 10. By asking if this always happens, the students investigate place value using simple algebra. The resource includes the prompt, teacher notes and inquiry prompts.
|Year level(s)||Year 6, Year 7|
|Purpose||Assessment task, Student task, Teaching resource, Teaching strategies|
|Teaching strategies and pedagogical approaches||Collaborative learning, Explicit teaching, Mathematics investigation, Questioning|
|Keywords||decimal, place value, multiplication|
|Curriculum connections||Critical and creative thinking, Numeracy|
|Strand and focus||Algebra, Number, Build understanding|
|Topics||Decimals, Place value, Multiples, factors and powers|
|AC: Mathematics (V9.0) content descriptions||
Multiply and divide decimals by multiples of powers of 10 without a calculator, applying knowledge of place value and proficiency with multiplication facts; using estimation and rounding to check the reasonableness of answers
Formulate algebraic expressions using constants, variables, operations and brackets
Number patterns and algebraic thinking (P6)
Multiplicative strategies (P9)
Number and place value (P9)
© Andrew Blair 2012-21. Creative Commons BY-NC-SA 4.0.