PLACE VALUE
POWER OF 10
ROUNDING/
ESTIMATING
DECIMALS
Divisibility
100
write this number in word form. 301,203,400
Three hundred million, two hundred three thousand, four hundred.
100
What is 10 to the power of 0 equal to?
1
100
Round 3.24 to the nearest one.
3 or 3.00
100
What operations require you to "line up the dot and give it all you got?"
Adding and subtracting decimals
100
Is 656 divisible by 2? why?
Yes because the dividend is an even number.
200
write this number, four billion, nine hundred fifty thousand, eight hundred.
4,000,950,800
200
10,000 x 100= Your answer must be written in power form.
10 to the power of 6
200
Round 144.549 to the nearest hundreth
144.55 or 144.550
200
What is 5.678 + .067 + 100 =
105.745
200
Is 900 divisible by 3? why?
yes because when you add the digits in the dividend together you get 9 and 9 is a multiple of 3.
300
How much larger is a tenth than a hundreth?
10 x larger. (1 tenth = 10 hundreths)
300
10 to the power of 5 equals?
100,000
300
Estimate by rounding to the lead numbers 4,577 + 67,000 + 833=
4,000 + 70,000 + 800 = 74,800
300
Do you always have to move the decimals in a division problem? Explain your thoughts
No you only have to move the decimal if the divisor is a decimal. For example in the problem 4.5 divided by 2 you must move the decimal. You would not move the decimal in the problem 45 divided by 2.5
300
What is the divisibility rule for 6 ?
If the number is divisible by 2 and 3 it is also divisible by 6.
400
How much larger is the tenths place than the thousandths place?
100x larger( 1 tenth = 100 thousandths)
400
What is greater 100,000,000 or ten to the power of 8?
they are equal
400
How are rounding and estimating different?
When you estimate you perform a mathematical operation with rounded numbers. When you round you do not perform any operation other than rounding.
400
18 divided by .4 =?
45 is your quotient
400
is 1,665 divisible by 9? why?
yes because the digits in the dividend add up to 18 and 18 is a multiple of 9.
500
write this number is expanded form 3,560,001
3,000,000 500,000 60,000 1
500
652 divided by 100 =?
6.52
500
Estimate (to lead number) .456 + .789 + .001=
1.4
500
what is 7.56 x .33
24.948
500
What are all of the divisibility rules for 2, 3, 4, 5, 6, 9, and 10?
2= the dividend must be even 3= the dividends digits must add up to a multiple of 3 4= the last two digits in the dividend are divisible by 4 OR the dividend can be divided by 2 twice. 5= the dividend ends in a 0 or a 5 6= the dividend is divisible by 2 and 3 9= the digits in the dividend add up to a multiple of nine 10= the dividend ends in a 0
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