Number Operations · JHS1 Mathematics

Lesson notes

Learning Objectives

Indicator: B7.1.2.1.1 - Multiply and divide given numbers by powers of 10 including decimals and benchmark fractions

By the end of the lesson, learners can:

Recall multiplication facts up to 144 and related division facts fluently when solving problems involving powers of 10.
Recall the decimal and percentage equivalents of given benchmark fractions such as 1/4, 1/10, 1/2 and 3/4.
Multiply a given decimal number by 10, 100, 1000, and by benchmark fractions 1/10, 1/100, 1/1000.
Divide a given decimal number by 10, 100, 1000 and by benchmark fractions 1/10, 1/100, 1/1000.
Explain in their own words the pattern of moving digits when multiplying or dividing by powers of 10.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Number Operations (1.2)
Content standard: B7.1.2.1 - Apply mental mathematics strategies and number properties used to solve problems
Indicator: B7.1.2.1.1 - Multiply and divide given numbers by powers of 10 including decimals and benchmark fractions
Suggested placement: Term 1, Week 3 (Week 3 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.
Curriculum reference: Mathematics, Common Core Programme (JHS1-JHS3), 2023, p. 7
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g.1. Recall multiplication facts up to 144 and related division facts.
E.g.2. Recall decimal names of given benchmark fractions converted to decimals or percentages (and vice versa)
E.g. 3. Find the product of a given decimal number when it is multiplied by 10, 100, 1000, 1 , 1 , 1 , etc.
10 100 1000
i. 105.25 × 1000
ii. 105.25 × 1 100