# 1.30 To describe and illustrate number systems that differ from

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## 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

## 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?

_____________________________________________________________________

_____________________________________________________________________

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:

 1 2 3 4 I know what the answer to a subtraction sum is called. _______ _______ _______ _______ I can calculate differences by rounding off to the nearest 10 and 100 (LO 1.8) _______ _______ _______ _______ I know what a prime number is (LO 1.3) _______ _______ _______ _______ I know what an even number is (LO 1.3) _______ _______ _______ _______ I understand the Egyptian pictograms and can use them to subtract (LO 1.2) _______ _______ _______ _______

## 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.

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