B5 Mathematics · Term 1 Week 10: Number Operations

Lesson notes

Learning Objectives

Indicator: B5.1.2.5.1 - Solve multi step word problems involving the four basic operations

By the end of the lesson, learners can:

Translate a multi-step word problem into a mathematical sentence using addition, subtraction, multiplication and division
Solve multi-step word problems involving addition and multiplication, showing all working steps
Solve multi-step word problems involving subtraction and division, showing all working steps
Solve multi-step word problems involving division and multiplication combined
Justify the reasonableness of their answers by estimating and checking with inverse operations

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Number Operations (1.2)
Content standard: B5.1.2.5 - Translate word problems into mathematical sentences and solve
Indicator: B5.1.2.5.1 - Solve multi step word problems involving the four basic operations
Suggested placement: Term 1, Week 10 (Week 10 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Source document note: The official curriculum document has a fault in this entry, so the curriculum text above is transcribed exactly as printed:

exemplars - p.70
Curriculum reference: Mathematics Curriculum for Primary Schools (Basic 4-6), 2019, p. 70
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Learners model mathematical statements from a given word problem involving addition and multiplication and solve using the strategies learnt
E.g. 2. Learners model mathematical statements from a given word problem involving division and subtraction and solve using the strategies learnt
E.g. 3. Learners role play a given word problem involving addition and multiplication and solve
E.g. 4. Learners role play a given word problem involving subtraction and division and solve
E.g. 5. Learners model mathematical statements from a given word problem involving division and multiplication and solve using the strategies learnt. The relationship between operations and the use of calculator and spreadsheet to assess the reasonableness of answers should be stressed. The document gives this indicator the code B5.1.2.5.1 under standard B5.1.2.5 "Translate word problems into mathematical sentences and solve"; the same five exemplars appear verbatim as B4.1.2.6.1 in B4.