Write 13.2 into Scientific notation form. Do you need move the decimal to the left or to the right?
To the left.
200
One car is 3,000 dollar. How much are three cars?
9,000 dollar.
200
What is the simple file of 3/12?
1/4
200
2x+5=15
Which step should be do first?
Subtraction
200
Is 0,1,2,3... Whole number or natural number?
Whole number.
300
Why do we use scientific notation?
Easier to express.
300
A man drove to a supermarket at noon. He want to buy two apples. Banana is one dollar each and apples are 2 dollar each. How much should he paid?
Find useful information.
Apples are 2 dollar each.
He wants to buy 2 apples.
300
What is 3/4 in decimal?
0.75
300
3.5+3x=3.5
What is x?
x=0
300
Is pai a real number?
Yes.
400
How to write 3.53*10(5) in simplified notation?
353,000
400
A table's width, length, depth are all 3 cm. What is the unit of the mass of the table?
km(3)
400
What's 4/3*3/4?
1
400
3x/6=4 What is x?
x=8
400
What do we call a number that is a non-recurring decimal?
irrational number.
500
Write 0.23800 in Scientific notation form.
2.38*10(-1)
500
Three ducks and two ducklings weigh 32 kg. Four ducks and three ducklings weigh 44kg. All ducks weigh the same and all ducklings weigh the same. What is the weight of two ducks and one duckling?
24kg
500
1/3+1/4+1/2=?
13/12
500
3.14x+4.13=4.14
x=1/314
500
Is 1.23423... a irrational number or rational number?