11.35×（-2/3）+1.05×（-2/9）-7.7×（-4/3）

It's 37 / 15

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1. 1+3+5+7+9+11+13+15+17+19…… +2005 = what's the second power
2. Conversion between square kilometers and square kilometers
3. What is the conversion relationship between hectare and mu?
4. 0.5 ha=______ Square meters
5. Three fifths of a ton equals () kg, three fifths of a hectare equals () square meters
6. 5.3 hectares = (how many) square meters?
7. How many hectares is 35000 square meters
8. 1.08 square kilometers equals () square kilometers
9. One hectare is equal to? Square kilometer One hectare is equal to one square kilometer Square kilometer 1 square kilometer = 100 hectares How many square kilometers is a hectare One hundredth of a square kilometer = one hundred hectares How many square kilometers is one hectare equal to 1 square kilometer = 1 kilometer * 1 kilometer = 1000 meters * 1000 meters = 1000000 square meters, 1 hectare = 10000 square meters, so 1 square kilometer is equal to 100 hectares
10. 1 square kilometer = how many ten thousand hectares
11. Five out of six equals () minutes, nine out of 125 equals () meters, and five out of eight square meters equals () square centimeters
12. 1 + 3 = 4 = 221 + 3 + 5 = 9 = 321 + 3 + 5 + 7 = 16 = 42 1+3+5+7+9+11+13+… +19=______ =______ 2．
13. |How to calculate (1 / 5) - (1 / 7) | + | (1 / 9) - (1 / 7) | + | (1 / 9) - (1 / 11)
14. Calculation: 1 / 3 * 5 + 1 / 5 * 7 + 1 / 7 * 9 + 1 / 9 * 11 + 1 / 11 * 13
15. 1 * 3 * 5 + 3 * 5 * 7 +. + 9 * 11 * 13 = how much,
16. Study the following series of numbers: 1, - 3, 5, - 7, 9, - 11, 13 According to this rule, the nth number should be () A. 2n-1B. 1-2nC. （2n-1）（-1）nD. （2n-1）（-1）n+1
17. 1+3+5+7+9+11+13=（）×（）=（）
18. How many square decimeters is 3 square meters
19. How many square decimeters is 3 square meters equal to
20. 60 square meters = () square decimeters