问题
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48,2,4,6,54,(),3,9 A. 6;B. 5;C. 2;D. 3;
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1,3/4,9/5,7/16,25/9,()15/38 B.11/36 C.14/27 D.18/29
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1,3/4,9/5,7/16,25/9,______ () A.15/38 B.11/36 C.14/27 D.18/29
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1,3/4,9/5,7/16,25/9,() A.15/38 B.11/36 C.14/27 D.18/29
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1,3/4,9/5,7/16,25/9,()A.15/38B.11/36C.14/27D.18/29
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脱式计算.(能简算的用简算)(1)25×4.4(2)7.7×0.16÷7.7×12.5 (3)10.64÷(3.7-2.9)(4)4.8×99+4.8 (5)47.3+21×(3