小学六年级数学简便运算练习题

12.06+5.07+2.94 30.34+9.76-10.34

33×3÷×3 8825×7×4 34÷4÷1.7 1.25÷×0.8 102×7.3÷5.1 17+

,

233735547-7 1-- 7991713

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); 933-15.7-4.3 41.06-19.72-20.28

7-3+ 8+2

25383847595223-9 11+7+3

355乘法交换律,连除方法: a×b×c=a×c×b

a×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÷0.4 1.96÷0.5÷4 1.06×2.5×4

1313171713×19÷19 29÷27×27 125×7×8

a+ (b + c )= a+b+c a +(b-c)= a+b-c a –(b-c)= a-b+c a-( b +c)= a-b-c; 19.68-(2.68+2.97) 5.68+(5.39+4.32) 19.68-(2.97+9.68) 7

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÷

(7

631252+(-) 5-(-)

78717181710074211311) 0.74÷(71×) 24×(--+) (12+93100712863) ×7

319-520)×

516737 0.92×1.41+0.92×8.59 ×-× 38513513

1.3×11.6-1.6×1.3

99×11.6+18.4× 9999+999+99+9 4821998 55-

3.2×12.5×25 1.25×88 3.6×0.25 7.6÷0.25

3.5÷0.125 1.8×99+1.8 3.8×9.9+0.38

777×103×2 252525--

77×31+

3232 1.01×9.6 102×0.87 2.6×9.9

2217333312×+÷ ×36 ×38 13.5×27+13.5×72+13.5 335373717

1.5×7.4+0.6×150%+2÷ 5.3×+2.7×25% 0.67×10.1-6.7

28×21.6-2.8×16 5.6×1.7+0.56×83

乘法分配律: (a+b)×c=a×c+b×c (a-b)×c=a×c-b×c 隐“1”法. 拆分法

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