Question

Jawabkan pertanyaan no 15,16,17,20 pake cara

Answer 1

16.

Panjang bambu = 16,8 dm = 168 cm
Ruas 1 = 4,2 dm = 42 cm
Ruas 2 = 380 mm = 38 cm
Ruas 3 = 0,43 m = 43 cm
Ruas 4 = x

42 + 38 + 43 + x = 168
123 + x = 168
x = 168 - 123 = 45 cm (D)

17.

3,8 Kwintal = 380 kg
0,54 ton = 540 kg
Dijual dan tersisa 145 kg

Beras yang terjual berapa?

380 + 540 - x = 145
920 - x = 145
- x = 145 - 920
-x = -775
x = 775 kg (B)


20.

8000 cm² = 80 dm²
3,4 are = 340 m² = 34.000 dm²
200 c are = 200 m² = 20.000 dm²

80 + 34.000 - 20.000 = 14.080 dm² (C)

Nomor 15 saya ragu