142
Weight of the apples = 18 kg 387 g = 18.387 kg
Weight of the oranges = 14 kg 270 g = 14.270 kg
Total weight of apples and oranges = 18.387 kg + 14.270 kg = 32.657 kg
Total weight of all the three fruits = 36 kg 357 g = 36.357 kg
Weight of mangoes = 36.357 kg – 32.657 kg = 3.700 kg = 3 kg 700 g
Thus, the weight of the mangoes is 3.7 kg or 3 kg 700 g.
Solve the following word problems, in your notebook.
a. Ajay has a 2 bottle filled with water. He uses 750 m to water the plants. How much water is left in the bottle?
b. 13 250 m orange juice was bought for a birthday party. After the party, 1 99 m of juice was left. How much juice did the guests have?
c. A motorist covered a distance of 45 km 300 m in the first hour and 43 km 750 m in the second hour. What distance did he cover in 2 hours?
d. Three children weigh 28.316 kg, 29.250 kg and 34 kg. Find how much they weigh together.
e. Ryan weighs 32 kg 500 g. Jas weighs 1 kg 550 g less than Ryan. What is Jas’s weight?
SUMS INVOLVING MULTIPLICATION AND DIVISION
Example 12: Multiply 35 kg 634 g with 15.
First, convert 35 kg 634 g to kg.
35 kg 634 g = 35.634 kg
Now, multiply 35.634 kg with 15.
So, 35.634 kg × 15 = 534.510 kg = 534 kg 510 g
Example 13: Divide 55 km 608 m by 6.
First, convert 55 km 608 m to km.
55 km 608 m = 55.608 km
Now, divide 55.608 km by 6.
So, 55.608 km ÷ 6 = 9.268 km
Multiply. Write the answers in your notebook.
a. 589 m 33 cm with 11 b. 143 850 m with 7
c. 261 g 87 mg with 9 d. 345 km 56 m with 15
9
.
2
6
8
6
5
5
.
6
0
8
–
5
4
1
6
–
1
2
4
0
–
3
6
4
8
–
4
8
0
18
3 5 . 6 3 4
×
1 5
1 7 8 1 7 0
+
3 5 6 3 4 ×
5 3 4 . 5 1 0
2
1
2
3
17