1.2 To use a series of techniques to perform calculations

Mathematics

Number concept

Educator section

Memorandum

1.1 50 000 + 400 + 30 + 6

1.2 90 000 + 800 + 10 + 7

Puzzle!

100 000

100 000; hundred thousand

Leaner section

Content

Activity: to use a series of techniques to perform calculations [1.10.3]

1. Do you still remember what "expanded notation" is? Quickly explain it to a partner! Then look at the example and see whether you can write the following numbers in expanded notation:

e.g. 36 518 = 30 000 + 6 000 + 500 + 10 + 8

1.1 50 436 =

1.2 98 017 =

Puzzle!

What number is 10 times larger than 10 000?

Fill in the missing answers:

9 + 1 = 10 ten

99 + 1 = 100 one hundred

999 + 1 = 1 000 one thousand

9 999 + 1 = 10 000 ten thousand

99 999 + 1 = __________________ __________________

• Let us see if you were correct!

We read 318 526 as three hundred and eighteen thousand five hundred and twenty six.

You were therefore correct if you said 100 000 (hundred thousand).

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent patterns and relationships, as well as to solve problems using algebraic language and skills.

Assessment Standard 1.10: We know this when the learner uses a range of techniques to perform written and mental calculations with whole numbers including:

1.10.3: building up and breaking down numbers