用递等式计算:①0.6-0.2×1.9÷7.6;②5÷ 5 7 - 5 7 × 1 5 ;③1.0
用递等式计算:①0.6-0.2×1.9÷7.6;②5÷57-57×15;③1.02÷(5+0.4×0.25);④712÷(12+23)×25;⑤3÷34×(45-310)...
用递等式计算:①0.6-0.2×1.9÷7.6;②5÷ 5 7 - 5 7 × 1 5 ;③1.02÷(5+0.4×0.25);④ 7 12 ÷( 1 2 + 2 3 )× 2 5 ;⑤3÷ 3 4 ×( 4 5 - 3 10 ).
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2014-12-01
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①0.6-0.2×1.9÷7.6, =0.6-0.38÷7.6, =0.6-0.05, =0.55;
②5÷ - × , =5× - × ; =7- =6 ;
③1.02÷(5+0.4×0.25), =1.02÷(5+0.1), =1.02÷5.1, =0.2;
④ ÷( + )× , = ÷ × , = × × , = × , = ;
⑤3÷ ×( - ), =3÷ × , =3× × , =4× , =2. |
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