1.75/150=berapa persen? 2.bentuk pecahan desimal dari 13/20 adalah....... 3.bentuk pecahan biasa dari 0,75 adalah.... 4. 4 1/4+2/7=........ 5.hasil dari 1/3+7/9-1/18 adalah........ 6.4/6 dikali 12=............... 7.7/9:13=......... 8.3 1/2dikali 1/3:2/5=....................... 9.0,48 : 0,6 :4=..................................... 10.2 1/4 : 3/4:2 1/4=....................... 11.0,06 dikali 0,22:0,44=................... 12. 5 1/2-3 1/3:1 3/5=.............................. 13.putra memiliki 18 pensil berwarna merah dan biru, 4/9 di antaranya tidak berwarna biru berapa banyak pensil putra yang berwarna biru ?
2. 13/20 = 13 ÷ 20 = 0,65
3. 0,75 = 75/100
4. 1/4 + 2/7
= 7/28 + 8/28
= 15/28
5. 1/3 + 7/9 - 1/18
= 6/18 + 14/18 - 1/18
= 19/18 = 1 1/18
6. 4/6 × 12 = 8
7. 7/9 ÷ 13
= 7/9 ÷ 13/1
= 7/9 ÷ 1/13
= 7/117
8.3 1/2 × 1/3 ÷ 2/5
= 7/2 × 1/3 ÷ 2/5
= 7/6 ÷ 5/2
= 35/3
= 11 2/3
9. = 0,48 ÷ 0,6 ÷ 4
= 48/100 x 6/10 x 4/1
= 48/100 x 10/6 x 1/4
= 8/10 x 4/1
= 32/10
= 3,2
10. = 2 1/4 : 3/4 : 2
= 9/4 : 3/4 : 2/1
= 9/4 x 4/3 x 1/2
= 3/1 x 1/2
= 3/2
= 1,5
11. = 0,06 x 0,2 : 0,44
= 0,03
12. = 5 1/2 - 3 1/3 : 1 3/5
= 11/2 - 10/3 : 8/5
= 165/30 - 100/30
= 65/100 : 8/5
= 65/100 x 5/8
= 65/160
= 13/32
13. kagak tau !!!