Place Value
5,123
Which number is in the ones place?
3
What is the most important thing to remember when adding two decimals together?
To align the decimal points first.
What is important to remember when subtracting decimals?
Line up the decimal points before subtracting!
What should you remember when multiplying decimals?
Before multiplying, count the number of digits after the decimal point. The answer should have the same number of digits behind its decimal point.
What is important to remember when dividing decimals?
The divisor cannot be a decimal. Move the decimal point to the right, and move the decimal in the dividend the same number of spots to the right as well.
5,123
Which number is in the tens place?
2
24.2 + 15.6 =
39.8
2.1 - 1.1 =
1
2.1 x 5 =
10.5
2.5 ÷ 5 =
0.5
6,846,209.35
Which number is in the tenths place?
5
84.3 + 2.5 =
86.8
56.4 - 35.8 =
20.6
2.1 x 0.5 =
1.05
2.5 ÷ 0.5 =
5
5,618,249,327.2068
Which number is in the ten millions place?
1
51.5 + 36.7 =
88.2
35.2 - 22.9 =
12.3
5.6 x 2.9 =
16.24
3.5 ÷ 0.07 =
50
237,108,206,549.516729
Which number is in the thousandths place?
6
52.9 + 942.9 =
995.8
189.26 - 135.68 =
53.58
3.128 x 2.51 =
7.85128
16.4 ÷ .004 =
4,100