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multiplying decimals
dividing decimals by whole number
multiplying decimals by whole number
using the strategies
decimal
100
0.3 X 0.2 =
0.06
100
1.5 / 3 =
0.5
100
0.2 x 2 =
0.4
100
if you are using the strategy multiplying decimals, what would be an easy way to do that?
Multiply normally, ignoring the decimal points. Then put the decimal point in the answer - it will have as many decimal places as the two original numbers combined.Count up how many numbers are after the decimal point in both numbers you are multiplying, then the answer should have that many numbers after its decimal point.
100
what is a decimal?
Relating to or denoting a system of numbers and arithmetic based on the number ten, tenth parts, and powers of ten.
200
1.2 x 0.4 =
0.48
200
1.2 / 6 =
0.6
200
0.8 x 4 =
0.32
200
if you are dividing decimals and some one asked you how to do that how would you explain?
The trick is to convert the number you are dividing by to a whole number first, by shifting the decimal point of both numbers to the right
200
what happens to a decimal when it is multiplied by 10?
the decimal moves to the right one time
300
1.5 x 0.2 =
0.3
300
10.2 / 2 =
5.1
300
1.2 x 3 =
3.6
300
if you are dividing a decimal by a whole number what is the first step you would do?
Move outside decimal all the way to the right
300
what happens to a decimal when it is 1/10 of the original?
the decimal moves to the left once
400
5.0 x 3.3 =
16.5
400
2.4 / 8 =
0.3
400
3.5 x 5 =
17.5
400
what are the 2 main ways to solve a decimal problem?
multiplying and dividing
400
what happens to a decimal when it is multiplied by 100?
the decimal moves to the right twice
500
0.15 x 0.5 =
0.075
500
120.0 / 4 =
30
500
124.2 x 2 =
248.4
500
what is one way you have learned to divide decimals by decimals?
explain.
500
what happens to a decimal when it is multiplied by 1,000?
the decimal moves to the right three times