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时间:2020-03-20
《小学六年级数学简便运算练习题.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、12.06+5.07+2.9430.34+9.76-10.34×3÷×325×7×434÷4÷1.71.25÷×0.8102×7.3÷5.117+-71--,加法结合律,连减方法:a+b+c=a+(b+c),a+b-c=a+(b-c),a-b+c=a–(b-c),a-b-c=a-(b+c);933-15.7-4.341.06-19.72-20.287-3+8+2-11+7+3乘法交换律,连除方法:a×b×c=a×c×ba×b×c=a×(b×c),a×b÷c=a×(b÷c),a÷b÷c=a÷(b×c),a÷b×c=a÷(b÷c),700÷14÷5 18.6÷2.5÷0.41.96÷
2、0.5÷41.06×2.5×413×÷29÷×125×7×8a+(b+c)=a+b+ca+(b-c)=a+b-ca–(b-c)=a-b+ca-(b+c)=a-b-c;19.68-(2.68+2.97)5.68+(5.39+4.32)19.68-(2.97+9.68)7+(-)5-(-)乘法结合律,连除方法.(a×b)×c=a×(b×c)a×(b×c)=a×b×c,a×(b÷c)=a×b÷c,a÷(b×c)=a÷b÷c,a÷(b÷c)=a÷b×c,1.25×(8÷0.5)0.25×(4×1.2)1.25×(213×0.8)9.3÷(4÷)0.74÷(71×)24×(--+)(12+
3、)×7(7-)×0.92×1.41+0.92×8.59×-×1.3×11.6-1.6×1.3×11.6+18.4×9999+999+99+94821-9983.2×12.5×251.25×883.6×0.257.6÷0.253.5÷0.1251.8×99+1.83.8×9.9+0.38×103-×2-1.01×9.6102×0.872.6×9.9×31+×+÷×36×3813.5×27+13.5×72+13.51.5×7.4+0.6×150%+2÷5.3×+2.7×25%0.67×10.1-6.728×21.6-2.8×165.6×1.7+0.56×83乘法分配律:(a+b)×c
4、=a×c+b×c(a-b)×c=a×c-b×c隐“1”法.拆分法
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