Question

suppose 3kg of sugar contains 9×10^8 crystals. how many sugar crystals are there in (1) 5kg of sugar, (2) 1.2kg of sugar.​

Answer 1

Answer:

1)15x10^8 2)36x10^7

Step-by-step explanation:

by using unitary method

1)5x9x10^8/3=15x10^8

2)1.2x10^8/3=36x10^7

Answer 2

Answer:

Step-by-step explanation:

3kg : 9×10^8 crystals

3kg : 900000000 crystals

1kg : 900000000/3

1kg : 300000000

1kg = 300000000

(1) 5kg of sugar

1kg * 5 : 300000000 * 5

5k : 300000000 * 5

5kg : 1500000000

5kg : 1.5 × 10^9

5kg = 1.5 × 10^9

(2) 1.2kg of sugar

1kg * 1.2 : 300000000 * 1.2

1.2kg : 300000000 * 1.2

1.2kg : 360000000

1.2kg : 3.6 × 10^8

1.2kg = 3.6 × 10^8