Maharashtra State BoardSSC (English Medium) 6th Standard
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Addition of Decimal Numbers

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Topics

description

  • Grid model
  • Area model
  • Place value grid model

notes

Addition of Decimals:

To add the decimal numbers we can add them as whole numbers but the decimal will remain at the same place as it was in the given numbers. It means that we have to line up the decimal point in each number while writing them, and then add them as a whole number.

1) Add 0.35 and 0.42.

0.35 + 0.42 = 0.77
  Ones Tenths Hundredths
+ 0 3 5
+ 0 4 2
  0 7 7
 
2) Add 0.68 and 0.54?

∴ 0.68 + 0.54 = 1.22

  Ones Tenths Hundredths
+ 0 6 8
+ 0 5 4
  1 2 2

Example

Add: 1067.080 and 0000.943

 

Thousands

Hundreds

Ones

Tenths

Hundredths

Thousandths

Ten Thousandths

  1 0 6 7 0 8 0
+     0 9 4 3 0
  1 0 6 8 0 2 3

Example

Add: 1.5 and 5.006

 

Ones

Tenths

Hundredths

Thousandths

  1 5 0 0
+ 5 0 0 6
  6 5 0 6

Example

Rahul bought 4 kg 90 g of apples, 2 kg 60 g of grapes and5 kg 300 g of mangoes. Find the total weight of all the fruits he bought.

Weight of apples = 4 kg 90 g= 4.090 kg

Weight of grapes = 2 kg 60 g = 2.060 kg

Weight of mangoes = 5 kg 300 g = 5.300 kg

Therefore, the total weight of the fruits bought is

  4.090 kg
+ 2.060 kg
+ 5.300 kg
  11.450 kg

The total weight of the fruits bought = 11.450 kg.

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