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Chapter 8: Decimals > Addition of Numbers with Decimals

Addition of Numbers with Decimals

Add 0.35 and 0.42. Take a square and divide it into 100 equal parts.

Mark 0.35 in this square by putting dots of ones, tenths and hundredths in the below box.

Mark 0.42 in this square by putting dots of ones, tenths and hundredths in the below box.

Now count the total number of tenths in the square and the total number of hundredths in the square.

OnesTenthsHundredths
035
042

Therefore, 0.35 + 0.42 =

Can you now add 0.68 and 0.54?

Mark 0.68 in this square by putting dots of ones, tenths and hundredths in the below box.

Mark 0.54 in this square by putting dots of ones, tenths and hundredths in the below box.

Now count the total number of tenths in the square and the total number of hundredths in the square.

OnesTenthsHundredths
068
054

Thus, 0.68 + 0.54 =

Find 0.29 + 0.36 ?

Mark 0.29 in this square by putting dots of ones, tenths and hundredths in the below box.

Mark 0.36 in this square by putting dots of ones, tenths and hundredths in the below box.

Now count the total number of tenths in the square and the total number of hundredths in the square.

OnesTenthsHundredths
029
036

Thus, 0.29 + 0.36 =

Find 0.7 + 0.08 ?

Mark 0.7 in this square by putting dots of ones, tenths and hundredths in the below box.

Mark 0.08 in this square by putting dots of ones, tenths and hundredths in the below box.

Now count the total number of tenths in the square and the total number of hundredths in the square.

OnesTenthsHundredths
070
008

Thus, 0.7 + 0.08 =

Find 1.54 + 1.80 ?

Mark 1.54 in this square by putting dots of ones, tenths and hundredths in the below box.

Mark 1.80 in this square by putting dots of ones, tenths and hundredths in the below box.

Now count the total number of tenths in the square and the total number of hundredths in the square.

OnesTenthsHundredths
154
180

Thus, 1.54 + 1.84 =

Find 2.66 + 1.85 ?

Mark 2.66 in this square by putting dots of ones, tenths and hundredths in the below box.

Mark 1.85 in this square by putting dots of ones, tenths and hundredths in the below box.

Now count the total number of tenths in the square and the total number of hundredths in the square.

OnesTenthsHundredths
266
185

Thus, 2.66 + 1.85 =

Lata spent ₹ 9.50 for buying a pen and ₹ 2.50 for one pencil. How much money did she spend?

Instruction

Total money spent

  • Money spent for pen = ₹
  • Money spent for pencil = ₹
  • addition of two numbers
  • we get the answer is ₹
  • Total money spent = ₹ .

Samson travelled 5 km 52 m by bus, 2 km 265 m by car and the rest 1km 30 m he walked. How much distance did he travel in all?

Instruction

Total distance he travel

  • Distance travelled by bus = km m
  • Convert the m into km is km
  • Distance travelled by car = km m
  • Convert the m into km is km
  • Distance travelled by walk = km m
  • Convert the m into km is km
  • Addition of numbers =
  • We get the answer is km
  • Therefore, total distance travelled is = 8.347 km.

Rahul bought 4 kg 90 g of apples, 2 kg 60 g of grapes and 5 kg 300 g of mangoes. Find the total weight of all the fruits he bought.

Instruction

Find the total weight

  • Weight of apples = kg g
  • Convert the g into kg is kg
  • Weight of grapes = kg g
  • Convert the g into kg is kg
  • Weight of mangoes = kg g
  • Convert the g into kg is kg
  • Addition of numbers =
  • we get the answer is = kg
  • Therefore, the total weight of the fruits bought is 11.450 kg.