登录
一、口算。
$3.3 + 4.77 =$
$5.4 ÷ 3 =$
$3.02 - 1.2 =$
$20 ÷ 2.5 =$
$475 - 365 =$
$12.8 × 0.5 =$
$208 ÷ 4 =$
$59.8 + 141.2 =$
$44.4 × 0.2 =$
$3 × 335 =$
$9.6 - 4.72 =$
$8.8 × 0.8 =$
$\frac{5}{12} ÷ \frac{1}{4} =$
$\frac{4}{5} × \frac{7}{12} =$
$\frac{32}{11} ÷ \frac{2}{33} =$
$\frac{15}{16} + \frac{5}{8} =$
$\frac{3}{22} × 0.44 =$
$10 ÷ \frac{5}{7} =$
$\frac{6}{7} ÷ \frac{3}{5} =$
$5 - \frac{3}{4} =$
$\frac{1}{2} ÷ \frac{2}{5} =$
$12 ÷ \frac{4}{7} =$
$\frac{2}{3} × \frac{1}{4} =$
$\frac{4}{5} - 0.5 =$
$3.3 + 4.77 =$
$5.4 ÷ 3 =$
$3.02 - 1.2 =$
$20 ÷ 2.5 =$
$475 - 365 =$
$12.8 × 0.5 =$
$208 ÷ 4 =$
$59.8 + 141.2 =$
$44.4 × 0.2 =$
$3 × 335 =$
$9.6 - 4.72 =$
$8.8 × 0.8 =$
$\frac{5}{12} ÷ \frac{1}{4} =$
$\frac{4}{5} × \frac{7}{12} =$
$\frac{32}{11} ÷ \frac{2}{33} =$
$\frac{15}{16} + \frac{5}{8} =$
$\frac{3}{22} × 0.44 =$
$10 ÷ \frac{5}{7} =$
$\frac{6}{7} ÷ \frac{3}{5} =$
$5 - \frac{3}{4} =$
$\frac{1}{2} ÷ \frac{2}{5} =$
$12 ÷ \frac{4}{7} =$
$\frac{2}{3} × \frac{1}{4} =$
$\frac{4}{5} - 0.5 =$
答案
1. $3.3 + 4.77 = 8.07$
2. $5.4 ÷ 3 = 1.8$
3. $3.02 - 1.2 = 1.82$
4. $20 ÷ 2.5 = 8$
5. $475 - 365 = 110$
6. $12.8 × 0.5 = 6.4$
7. $208 ÷ 4 = 52$
8. $59.8 + 141.2 = 201$
9. $44.4 × 0.2 = 8.88$
10. $3 × 335 = 1005$
11. $9.6 - 4.72 = 4.88$
12. $8.8 × 0.8 = 7.04$
13. $\frac{5}{12} ÷ \frac{1}{4} = \frac{5}{3}$
14. $\frac{4}{5} × \frac{7}{12} = \frac{7}{15}$
15. $\frac{32}{11} ÷ \frac{2}{33} = 48$
16. $\frac{15}{16} + \frac{5}{8} = \frac{25}{16}$
17. $\frac{3}{22} × 0.44 = \frac{3}{50}$
18. $10 ÷ \frac{5}{7} = 14$
19. $\frac{6}{7} ÷ \frac{3}{5} = \frac{10}{7}$
20. $5 - \frac{3}{4} = 4\frac{1}{4}$
21. $\frac{1}{2} ÷ \frac{2}{5} = \frac{5}{4}$
22. $12 ÷ \frac{4}{7} = 21$
23. $\frac{2}{3} × \frac{1}{4} = \frac{1}{6}$
24. $\frac{4}{5} - 0.5 = \frac{3}{10}$
2. $5.4 ÷ 3 = 1.8$
3. $3.02 - 1.2 = 1.82$
4. $20 ÷ 2.5 = 8$
5. $475 - 365 = 110$
6. $12.8 × 0.5 = 6.4$
7. $208 ÷ 4 = 52$
8. $59.8 + 141.2 = 201$
9. $44.4 × 0.2 = 8.88$
10. $3 × 335 = 1005$
11. $9.6 - 4.72 = 4.88$
12. $8.8 × 0.8 = 7.04$
13. $\frac{5}{12} ÷ \frac{1}{4} = \frac{5}{3}$
14. $\frac{4}{5} × \frac{7}{12} = \frac{7}{15}$
15. $\frac{32}{11} ÷ \frac{2}{33} = 48$
16. $\frac{15}{16} + \frac{5}{8} = \frac{25}{16}$
17. $\frac{3}{22} × 0.44 = \frac{3}{50}$
18. $10 ÷ \frac{5}{7} = 14$
19. $\frac{6}{7} ÷ \frac{3}{5} = \frac{10}{7}$
20. $5 - \frac{3}{4} = 4\frac{1}{4}$
21. $\frac{1}{2} ÷ \frac{2}{5} = \frac{5}{4}$
22. $12 ÷ \frac{4}{7} = 21$
23. $\frac{2}{3} × \frac{1}{4} = \frac{1}{6}$
24. $\frac{4}{5} - 0.5 = \frac{3}{10}$
二、根据比例的基本性质，在括号里填合适的数。
$3.5:\frac{2}{5}=(\ \ \ \ ):2$
$7:(\ \ \ \ )=21:1.5$
$\frac{3}{8}:\frac{2}{5}=(\ \ \ \ ):\frac{6}{5}$
$7:(\ \ \ \ )=\frac{2}{3}:0.6$
$(\ \ \ \ ):\frac{4}{5}=\frac{15}{2}:\frac{8}{3}$
$1.5:(\ \ \ \ )=2:\frac{4}{5}$
$\frac{1}{4}:(\ \ \ \ )=0.4:4.8$
$\frac{1}{4}:(\ \ \ \ )=1.25:9$
$3.36:2.8=2.4:(\ \ \ \ )$
$\frac{4}{7}:(\ \ \ \ )=4:\frac{2}{5}$
$(\ \ \ \ ):\frac{1}{6}=\frac{1}{10}:\frac{2}{15}$
$\frac{5}{4}:\frac{2}{3}=\frac{3}{8}:(\ \ \ \ )$
$\frac{1}{6}:\frac{4}{5}=(\ \ \ \ ):48$
$(\ \ \ \ ):\frac{3}{5}=\frac{4}{7}:\frac{4}{5}$
$8.5:(\ \ \ \ )=4.25:3$
$3.5:\frac{2}{5}=(\ \ \ \ ):2$
$7:(\ \ \ \ )=21:1.5$
$\frac{3}{8}:\frac{2}{5}=(\ \ \ \ ):\frac{6}{5}$
$7:(\ \ \ \ )=\frac{2}{3}:0.6$
$(\ \ \ \ ):\frac{4}{5}=\frac{15}{2}:\frac{8}{3}$
$1.5:(\ \ \ \ )=2:\frac{4}{5}$
$\frac{1}{4}:(\ \ \ \ )=0.4:4.8$
$\frac{1}{4}:(\ \ \ \ )=1.25:9$
$3.36:2.8=2.4:(\ \ \ \ )$
$\frac{4}{7}:(\ \ \ \ )=4:\frac{2}{5}$
$(\ \ \ \ ):\frac{1}{6}=\frac{1}{10}:\frac{2}{15}$
$\frac{5}{4}:\frac{2}{3}=\frac{3}{8}:(\ \ \ \ )$
$\frac{1}{6}:\frac{4}{5}=(\ \ \ \ ):48$
$(\ \ \ \ ):\frac{3}{5}=\frac{4}{7}:\frac{4}{5}$
$8.5:(\ \ \ \ )=4.25:3$
答案
1. $3.5:\frac{2}{5}=(17.5):2$
2. $7:(0.5)=21:1.5$
3. $\frac{3}{8}:\frac{2}{5}=(\frac{9}{8}):\frac{6}{5}$
4. $7:(6.3)=\frac{2}{3}:0.6$
5. $(\frac{9}{4}):\frac{4}{5}=\frac{15}{2}:\frac{8}{3}$
6. $1.5:(0.6)=2:\frac{4}{5}$
7. $\frac{1}{4}:(3)=0.4:4.8$
8. $\frac{1}{4}:(1.8)=1.25:9$
9. $3.36:2.8=2.4:(2)$
10. $\frac{4}{7}:(\frac{2}{35})=4:\frac{2}{5}$
11. $(\frac{1}{8}):\frac{1}{6}=\frac{1}{10}:\frac{2}{15}$
12. $\frac{5}{4}:\frac{2}{3}=\frac{3}{8}:(\frac{1}{5})$
13. $\frac{1}{6}:\frac{4}{5}=(10):48$
14. $(\frac{3}{7}):\frac{3}{5}=\frac{4}{7}:\frac{4}{5}$
15. $8.5:(6)=4.25:3$
2. $7:(0.5)=21:1.5$
3. $\frac{3}{8}:\frac{2}{5}=(\frac{9}{8}):\frac{6}{5}$
4. $7:(6.3)=\frac{2}{3}:0.6$
5. $(\frac{9}{4}):\frac{4}{5}=\frac{15}{2}:\frac{8}{3}$
6. $1.5:(0.6)=2:\frac{4}{5}$
7. $\frac{1}{4}:(3)=0.4:4.8$
8. $\frac{1}{4}:(1.8)=1.25:9$
9. $3.36:2.8=2.4:(2)$
10. $\frac{4}{7}:(\frac{2}{35})=4:\frac{2}{5}$
11. $(\frac{1}{8}):\frac{1}{6}=\frac{1}{10}:\frac{2}{15}$
12. $\frac{5}{4}:\frac{2}{3}=\frac{3}{8}:(\frac{1}{5})$
13. $\frac{1}{6}:\frac{4}{5}=(10):48$
14. $(\frac{3}{7}):\frac{3}{5}=\frac{4}{7}:\frac{4}{5}$
15. $8.5:(6)=4.25:3$
