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 0 ones, 3 tenths and 5 hundredths in the below box.
Mark 0.42 in this square by putting dots of 0 ones, 4 tenths and 2 hundredths in the below box.
Now count the total number of tenths in the square and the total number of hundredths in the square.
| Ones | Tenths | Hundredths |
|---|---|---|
| 0 | 3 | 5 |
| 0 | 4 | 2 |
Therefore, 0.35 + 0.42 =
Tyr these
Can you now add 0.68 and 0.54?
Mark 0.68 in this square by putting dots of 0 ones, 6 tenths and 8 hundredths in the below box.
Mark 0.54 in this square by putting dots of 0 ones, 5 tenths and 4 hundredths in the below box.
Now count the total number of tenths in the square and the total number of hundredths in the square.
| Ones | Tenths | Hundredths |
|---|---|---|
| 0 | 6 | 8 |
| 0 | 5 | 4 |
Thus, 0.68 + 0.54 =
Examples
1.Lata spent ₹ 9.50 for buying a pen and ₹ 2.50 for one pencil. How much money did she spend?
- Money spent for pen = ₹
- Money spent for pencil = ₹
- addition of two numbers
- we get the answer is ₹
- Total money spent = ₹
.
2.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?
- 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.
3.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.
- 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.
EXERCISE
- Find the sum in each of the following :
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