Question

Matematika

No. 1) (15-5) × 5 - (-4 - 2) =
No.2) 0,2 × (10 - (-10)) : 4 - 2 × 0,125 =
No.3) 0,25 : 2 + 3per2 - 3 × 0,5 + (10 - 5) : 20 =



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Answer 1

Penjelasan dengan langkah-langkah:

1. (15-5) × 5 - (-4 - 2)

= 10x5-(-6)

= [10x5]+6

= 50+6

= 56

2. 0,2 × (10 - (-10)) : 4 - 2 × 0,125

= 0,2x(10+10):4-2x0,125

= 0,2x(20:4)-2x0,125

= (0,2x5)-(2x0,125)

= 1-0,25

= 0,75

3. 0,25 : 2 + 3/2 - 3 × 0,5 + (10 - 5) : 20 =

= (0,25 : 2) + 3/2 - (3 × 0,5) + ((10 - 5) : 20)

= 0,125+3/2-1,5+(5:20)

= 0,125+3/2-1,5+0,25

= 0,375

Semoga Membantu