Ancient Egyptain numbers 1

Ancient Egyptian numbers

Learning Intention:  to understand place value by using Ancient Egyptian numbers.

Challenge:

What number is this? Why?

This number makes 23 because there is 2 tens and 3 ones.

Some Ancient Egyptian numbers

	1
	10
	100

Challenge:

What are these numbers?

	144
	602
	379
	314
	636
	379
	379

What is the same about the last two numbers?

That it makes the same answer.

What is different about the last two numbers?

That one of it messed up and the other is not.

Challenge:

Change these numbers into Ancient Egyptian numbers. Insert a photo of your number written on a whiteboard.

7	IIIIIII
42	II
220
608	IIIIIIII
795	IIIII

Addition

Challenge:

Now try adding numbers. You cannot draw modern maths symbols like + and =.

7 + 5	IIIIIIIIII II→ II
36 + 15	IIIIIIIIII →  I
274+ 418	IIIIIIII → II
593 + 109	III IIIIIIIII → II

Subtraction

Now try subtracting numbers. You cannot draw modern maths symbols like - and =.

12 - 3	II → IIIIIIIIIIII III
23 - 17	III →  IIIIIII → IIIIII
445 - 152	IIIII → II →III
623 - 249	III → IIIIIIIII → IIII

What can you understand about Ancient Egyptian numbers compared to modern numbers?Today Mr Wong showed his math group how to write Ancient Egyption numbers.Its quite easy to learn you ancient numbers.
I learnt that you can't write modern numbers you can only write Ancient Egyptian Numbers.I learnt it by my teacher Mr Wong and I practiced when I have free time.