history of numbers
what is the hindu arabic counting system?
(ours)
1,2,3,4,5,6,7,8,910
100 + 10 + 1 = ?
111
5-(-4)
9 / +9
32 = how many "."?
... =9 "." ... ...
what is- 33 x (1 x 0)
0
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Which counting system is this?
The Egyption counting system
300 + 5 + 20 = ?
325
24 + (-8)
16
. . . . . . draw what the next triangle would look like in the number pattern?
. . . . . . . . . .
if you drew this you are correct!
what is- 8 - 2 + (-4)
2
What is our base number?
Base 10
If I threw a party, and I invited 20 girls and 9 boys, how many are there all together?
29
Find the value of:
(-5) x 5 x (-5)2
250
what is
60
1
what is- 80 ÷ 4 x (48 + -2)
920
What is the use of zero in the Aborigonal counting system?
NONE
1 000 0000 + 500 + 6000? = ?
10 006 500
Find the value of:
[32 + 2 x 17 + (-6)] ÷ 15
4
.... .... ....
what is the numerical expression for these dots?
(e.g. 72)
32
Robert bought 2 burgers for $3.50 each and 3 medium hot chips for $1.20 each. Find out the numerical expression to represent this situation and then find the cost.
2 × 3.50 + 3 × 1.20
= 7 + 3.60
= 10.60
Fill in the blank:
The Aborigonal counting system has _____ dialects?
800
At a concert, 20 people wore reading glasses, 300 were wearing bracelets, 8 people were waering sunglasses and 1000 people were wearing headphones.
How many people wore glasses?
28
On Monday at the county fair, Jared played a game and won 75 tickets. On Tuesday, he won 105 tickets; on Wednesday, he won 127 tickets, but then spent 250 of them on a prize. How many more tickets does Jared need to win to get a prize that costs 150 tickets?
93 tickets
What is the 43rd fibonacci number?
433494437
Martha pays 20 dollars for materials to make earrings. She makes 10 earrings and sells 7 for 5 dollars and 3 for 2 dollars. Write a numerical expression to represent this situation and then find Martha's profit?
7 × 5 + 3 × 2 - 20
= 35 + 6 - 20
= 41 - 20
= $21