Number Operations

Curriculum details

Strand

Number (Strand 1)

Sub-strand

Number Operations (1.2)

Content standard

B4.1.2.3 - Demonstrate an understanding of multiplication (2 or 3- digit by 1-digit )

Indicator

B4.1.2.3.1 - Multiply multi-digit numbers efficiently

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.16

Curriculum reference

Mathematics Curriculum for Primary Schools (Basic 4-6), 2019, p. 16

Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Multiplication of whole numbers using the "expand and box" method (partial decomposition method). Lead learners to multiply a 3-digit number by a 1-digit number as shown below, for example 448 × 2 =?

448 × 2 = (400 × 2) + (40 × 2) + (8 × 2) = 800 + 80 + 16 = 800 + 80 + (10 + 6) = 800 + 90 + 6 = 896
E.g. 2. Multiplication of whole numbers using the lattice method. Have learners draw a 2 by 1 rectangular box for solving 54 × 3.
E.g. 3. Have learners draw a 2 by 2 rectangular box for solving 34 × 17.

 The "expand and box" table (× / 400 / 40 / 8 over 2 / 800 / 80 / 16) is drawn beside E.g. 1; its cells interleave with the exemplar in the text layer and are shown in the figure instead.