Question

Tuliskan dalam bentuk desimal, dan pake cara​

Answer 1

Jawaban:

1.) 2,88

2.) 1,5

3.) 38,5

4.) 7,0

5.) 22,4

Penjelasan dengan langkah-langkah:

1.) 1 4/5 x (0,4 : 1/4)

= 9/5 × (4/10 : 1/4)

= 9/5 x (4/10 x 4/1)

= 9/5 x 16/10

= 144/50 (dikali 2)

= 288/100

= 2,88

2.) 75% : (0,5 x 1/5)

= 75/100 : (5/10 x 1/5)

= 75/100 : 5/10

= 75/100 x 10/5

= 750/500 (dibagi 50)

= 15/10

= 1,5

3.) 3 1/2 x 2,75 : 25%

= 7/2 x 275/100 : 25/100

= 1925/200 : 25/100

= 1925/200 x 100/25

= 192500/5000

= 1925/50 (dibagi 5)

= 385/10

= 38,5

4.) 4 2/5 : 2.2 x (1 3/4 : 50%)

= 22/5 : 22/10 x (7/4 : 50/100)

= 22/5 : 22/10 x (7/4 x 100/50)

= 22/5 : 22/10 x 700/200

= 22/5 x 10/22 x 700/200

= 220/110 x 700/200

= 2/1 x 7/2

= 14/2 (dikali 5)

= 70/10

= 7,0

5.) 2,8 : (20% x 1 1/4) : 0,5

= 28/10 : (20/100 x 5/4) : 5/10

= 28/10 : 100/400 : 5/10

= 28/10 x 400/100 : 5/10

= 11200/1000 : 5/10

= 112/10 : 5/10

= 112/10 x 10/5

= 1120/50 (dibagi 5)

= 224/10

= 22,4

Answer 2

Jawaban:

4818291;_82!$81+8310$+22