Question

1. 4/5 : 0,2 x 1 1/2 = ...

2. 1 3/5 x 0,25 : 20 % = ...

3. 3,5 x ( 3/5 : 20 % ) = ...

Answer 1

Settlement:

For multiplication and division we must change all forms into ordinary fractions.

For division, the second number is after the divide is reversed, the denominator is the numerator and the numerator is the denominator. And the sign for it changes to the sign of time.

1. 4/5: 0.2 x 1 1/2

= 4/5: 2/10 x 3/2

= 4/5 x 10/2 x 3/2

= 4/1 x 2/2 x 3/2

= 4/1 x 1 x 3/2

= 12/2

= 6

2. 1 3/5 x 0.25: 20%

= 8/5 x 25/100: 20/100

= 8/5 x 1/4: 1/5

= 8/5 x 1/4 x 5/1

= 8/1 x 1/4 x 1/1

= 8/4

= 2

3. 3.5 x (3/5: 20%)

= 35/10 x (3/5: 20/100)

= 7/2 x (3/5: 1/5)

= 7/2 x (3/5 x 5/1)

= 7/2 x 3

= 21/2

= 10 1/2

Hope it helps ✌

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Mapel = Mathematics

Class = 5 elementary school

Material = Fraction

Keywords = multiplication & division