Addition
2.6 + 4.9
7.5
3.8 - 2.5
1.3
2.7 x 2.4
6.48
Are decimals whole numbers?
Decimals are not included in the set of whole numbers.
What is the most important part of a decimal?
The decimal point.
13.3 + 14.2
27.5
12.3 - 10.2
2.1
3.31 x 2.3
7.613
What is the most important part to adding and subtracting decimal?
The most important thing is to keep your decimal points lined up.
Do decimals have to line up when multiplying? Why or Why Not?
No, you do not need to line up the decimal points, just the right-most digits.
4.32 + 3.26
7.58
5.36 - 4.28
1.08
2.47 x 1.21
2.9887
What is the most important thing when multiplying decimals?
Why do we need to learn addition and subtraction of decimals?
We need to find the sum or total or find the differences in values.
13.3 + 14.2
49.56
28.39 - 26.28
2.11
1.28 x 1.5
1.92
What is the purpose of using decimals?
What happens when you multiply a decimal by a whole number?
You put the same number of digits after the decimal as there were in the original decimal number.
29.16 + 4.22
33.38
46.27 - 43.28
2.99
1.32 x 2.21
2.9172
What operation is used in adding decimal number?
Line up the decimal points and then add or subtract.
Why is it necessary to deal with operations of decimal how is it important in our daily life?
Decimal numbers are used in situations where more precision is required than the whole numbers can provide.