发布人:繁体字网(www.fantiz5.com) 发布时间:2015-10-24 07:30:00
试题原文 |
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①125×3.2×2.5, =125×8×0.4×2.5, =(125×8)×(0.4×2.5), =1000×1, =1000; ②3.6×10.1, =3.6×(10+0.1), =3.6×10+3.6×0.1, =36+0.36, =36.36; ③5.8×2.7+0.58×73, =5.8×2.7+5.8×7.3, =5.8×(2.7+7.3), =5.8×10, =58; ④3.6+6.4×1.8, =3.6+11.52, =15.12; ⑤(1.48+3.02)÷(3.6×0.5), =4.5÷1.8, =2.5; ⑥(36.7-4.9)×101-31.8, =31.8×101-31.8, =31.8×(101-1), =31.8×100, =3180. |
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