1.30 To describe and illustrate number systems that differ from

Mathematics

Subtraction

Educator section

Memorandum

1. Before Christ

2. 5 502 / (will be +1 each year)

3.

3.1 900 000

3.2 9 000

3.3 999 900

3.4 0 990

3.5 990 000

Leaner section

Content

Activity: to describe and illustrate number systems that differ from our own [lo 1.2]

Did you know?

The Egyptians used pictograms to represent numbers as long ago as

3500 B.C. Pictograms looked like these:

1. What does B.C. mean?

_____________________________________________________________________

2. How many years ago was this?

_____________________________________________________________________

3. Calculate the following. Use contemporary digits for your answers.

3.1 ____________________

3.2 = .____________________

3.3 = ____________________

3.4 = ____________________

3.5 = ____________________

TIME FOR SELF-ASSESSMENT

Let’s see how well you are managing. Read the criteria and place a tick in the appropriate block:

Assessment

Learning Outcome 1: The learner will be able to recognise, describe and represent numbers and their relationships, and to count, estimate, calculate and check with competence and confidence in solving problems.

Assessment Standard 1.2: We know this when the learner describes and illustrates written number systems different to own.