Jawaban:

1. 20×15÷10 = 300÷10 = 30 (D)

2. 48 = coklat 36 = kacang

^ ^

2 24 2 18

^ ^

2 12 2 9

^ ^

2 6 3 3

^

2 3

Coklat = 2⁴ × 3

Kacang = 2² × 3²

FPB = 2² × 3 = 12

Jadi, jumlah piring adalah 12 buah (D)

3. (-12) × (-5) - (-8) = 60 + 8

= 68 (B)

4. Sisa = 22 1/4 - 8 3/4 - 5 3/4

= 89/4 - 35/4 - 23/4

= 31/4

= 7 3/4 kg (C)

5. Bb Adit = 2/3 × 60 = 40 kg (C)

6. J.sebenarnya = J.peta × skala

= 9 cm × 400.000

= 3.600.000 cm

= 36 km (C)

7. 1 jam 45 menit

1 jam 40 menit

______________+

3 jam 25 menit (D)

8. 4 hektar + 600 m² = .... Are

4×100 + 6 = ... Are

400 + 6 = 406 are (B)

9. Waktu = jarak ÷ kecepatan

= 375 km ÷ 60 km/jam

= 6,25 jam ( 6 25/100 × 60 menit)

= 6 jam 15 menit (A)

10. Volume = Debit × waktu

= 120 liter/jam × 30 menit

= 120 liter/60 menit × 30 menit

= 120 liter/2

= 60 liter (B)

11. L.p kubus = 6 × s × s

= 6 × 8 × 8

= 384 (A)

12. V = p × l × t

= 30 × 10

= 300 cm³ (A)

13. Luas = a × t

= 42 × 28

= 1.176 cm² (C)

Maaf kalau salah

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