小學六年级数学简便运算练习题.doc
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12.06+5.07+2.94 30.34+9.76-10.34
×3÷×3 25×7×4
34÷4÷1.7 1.25÷×0.8
102×7.3÷5.1 17+-7
1--
,
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-
11+7+3
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 ÷ 29÷×
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+(-)
5-(-)
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+) ×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+9 4821-998
3.2×12.5×25 1.25×88 3.6×0.25
7.6÷0.25 3.5÷0.125
=7.6÷=7.6×4。×103-×2- 1.01×9.6
102×0.87 2.6×9.9
×31+ ×+÷
×36 ×38
13.5×27+13.5×72+13.5 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
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