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0.36X5.4简便方法

简便计算 (10-5.4)x0.36+1.08 =4.6x0.36+0.36×3 =(4.6+3)×0.36 =7.6×0.36 =2.736

0.36×4.86+0.64×4.86 =4.86×(0.36+0.64) =4.86×1 =4.86

36.3x0.54+6.37x5.4 =5.4x(3.63+6.37) =5.4x10 =54

3/7 × 49/9 - 4/3 2. 8/9 × 15/36 + 1/27 3. 12× 5/6 – 2/9 ×3 4. 8× 5/4 + 1/4 5. 6÷ 3/8 – 3/8 ÷6 6. 4/7 × 5/9 + 3/7 × 5/9 7. 5/2 -( 3/2 + 4/5 ) 8. 7/8 + ( 1/8 + 1/9 ) 9. 9 × 5/6 + 5/6 10. 3/4 × 8/9 - 1/3 11. 7 × 5/49 + 3/14 12...

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