Can I ask k1212.64/65/66/67 together?

It should be three people at one table, not one

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4. How many Mu is 102000 square meters
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6. How many square centimeters is 3 square decimeters equal to
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11. Simplify 67 × 66 / 65, 12 / 5 / 9 + 12 / 5 / 8 / 9
12. What's 62.8 times two-thirds?
13. What's 62.8 times 1 / 3
14. 66 times 3 / 65 plus 62 / 65
15. 1+2+3+4+5+6+7+8+9+11+33+66+555+9999
16. 1+2+3+4+5+6+7+8+9+10+11.+66=?
17. Simple: 20.88 △ 7.2 + 6.89.66 + 3.65-2.66 + 0.35 1.25x4.85x0 simple and convenient: 20.88÷7.2+6.8 9.66+3.65-2.66+0.35 1.25x4.85x0.8 20.3-1.3×5-3.5
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