Jawaban:

1. -2,5

2. 19

3. 102

4. 9,6

5. 2,6875

6. 6,24375

7. 2,12

8. 13,067

9. 10

10. 0,15

Penjelasan dengan langkah-langkah:

1. 10,5 + 3 1/4 - 16 = 10,5 + 12/4 - 16

= 10,5 + 3(12÷4=3) - 16

= -2,5

2. 8 1/3 - 0,3 + 11 = 25/3 - 0,3 + 11

= 8,3 - 0,3 + 11

= 19

3. 7 2/7 × 1/2 ÷ 1/28 = 51/7 × 1/2 ÷ 1/28

= (51×1)(7×2)÷ 1/28

= 51/14 ÷ 1/28

= 51/14 × 28/1 = (51×28)(14×1)

= 1.428/14

= 714/7=714÷7=102

4. 12 ÷ 1 4/5 × 3/4 = 12 ÷ 5/4 × 3/4

= 12 ÷ 20/16

= 12 ÷ 1,25

= 9,6

5. 1/16 × 5 3/8 ÷ 0,125 = 1/16 × 43/8 ÷ 0,125

5. 1/16 × 5 3/8 ÷ 0,125 = 1/16 × 43/8 ÷ 0,125 = 43/128 ÷ 0,125

5. 1/16 × 5 3/8 ÷ 0,125 = 1/16 × 43/8 ÷ 0,125 = 43/128 ÷ 0,125 = 0,3359375 ÷ 0,125

5. 1/16 × 5 3/8 ÷ 0,125 = 1/16 × 43/8 ÷ 0,125 = 43/128 ÷ 0,125 = 0,3359375 ÷ 0,125 = 2,6875

5. 1/16 × 5 3/8 ÷ 0,125 = 1/16 × 43/8 ÷ 0,125 = 43/128 ÷ 0,125 = 0,3359375 ÷ 0,125 = 2,68756. 2,25 × 3/8 + 5 2/5 = 2,25 × 3/8 + 27/5

5. 1/16 × 5 3/8 ÷ 0,125 = 1/16 × 43/8 ÷ 0,125 = 43/128 ÷ 0,125 = 0,3359375 ÷ 0,125 = 2,68756. 2,25 × 3/8 + 5 2/5 = 2,25 × 3/8 + 27/5 = (2,25 × 3/8) + 27/5

5. 1/16 × 5 3/8 ÷ 0,125 = 1/16 × 43/8 ÷ 0,125 = 43/128 ÷ 0,125 = 0,3359375 ÷ 0,125 = 2,68756. 2,25 × 3/8 + 5 2/5 = 2,25 × 3/8 + 27/5 = (2,25 × 3/8) + 27/5 = (2,25 × 0,375) + 27/5

= 0,84375 + 27/5

= 0,84375 + 5,4

= 6,24375

7. 5,4 × 4/5 - 2 1/5 = 5,4 × 4/5 - 11/5

= (5,4 × 4/5) - 11/5

= (5,4 × 0,8) - 11/5

= 4,32 - 11/5

= 4,32 - 2,2 = 2,12

8. 12,1 ÷ 9/10 - 33 1/3% = 12,1 ÷ 9/10 - 100/3%

= (12,1 ÷ 9/10) - 100/3%

= (12,1 ÷ 0,9) - 100/3%

= 13,4 - 33,3%

= 13,4 - 33,3/100

= 13,4 - 0,333

= 13,067

9. 1 1/2 = 3/2 = 1,5

1,5 = 6 buah apel

1,5 × 2 = 3 → 12 buah apel

12 - 2 = 10

10. 3 ÷ 4 = 0,75 → 0,75 ÷ 5 = 0,15

masing masing dapat 0,15 kg permen

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