-875 - (- 1 and 1 / 4) + 3 / 4 + 1 and 7 / 8 (calculation)

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• 1. Simplification 0.24:2, 0.3:0.09, 5:1
• 2. {1.625+2/3·（3/4）/（3/4）·2/3}/（1/2-1/3-1/4+1/6）·12-0.75
• 3. 11 out of 3 plus 3 out of 4 plus 5 out of 7
• 4. Comparison size: 1, 7 / 12 + 3 / 4 () 2-24: 17.2, 5 / 11 + 2 / 5 () 5 / 11-45: 11
• 5. Who is bigger than 0.11 and one in nine? Who is bigger than 5.875 and five in eight? Who is bigger than 0.55 and seven in 25?
• 6. How to arrange from small to large
• 7. 48, 7 / 2, 10 / 3 (the first group), 5 / 9, 4 / 11 and 0.55 in descending order
• 8. Put the scores of the following groups in the order from big to small (1) 3 / 4, 9 / 7, 15 / 11, 12 / 5 (2) 1:30 13:1:8:5:1:4:3:6:11
• 9. zero
• 10. 50% of a number is 3% less than 7% of 8. What's the number?
• 11. Simple calculation of 6 and 4 / 7-2 and 1 / 8 + 17 / 7-0.875
• 12. () 8 = () 40 = 0.5 = (): () = () discount
• 13. 5 / 8 of 40 is () () 5 / 8 of () is 40
• 14. 1 / 5 × 8 + 0.6 × 0.2 + 1 / 5 × 40%
• 15. () / 8 = 40% () = 0.5 = () percent = (): ()
• 16. 0.25 = 1 / 4 = 2 / 8 = 5 divided by () = divided by 40
• 17. How to calculate 40 1.25 times 40 0.8 1.25*1.25*…… *1.25*0.8*0.8*…… 0.8=? (40) (40) Urgent! Help me 1!
• 18. 4.52+5.48+0.25×40 8.4×（0.125+0.1÷0.8） Only change the above operation symbol, the result is 0
• 19. 25 is 40 (); 18 is 12 (). 5 / 8 tons is less than 0.75 tons（ 25 is 40 (); 18 is 12 (). 5 / 8 tons is less than 0.75 tons (); 0.75 tons is more than 5 / 8 tons () The number of white rabbits is known to be 45% of that of grey rabbits, so the number of white rabbits is ()% less than that of grey rabbits
• 20. 0.25% 7.8% 40 minus 78 Simple operation