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简便计算:1011×113×13×11;(25+310)×103;1349×21+28×13
问题详情
简便计算: 1011×113×13×11,10 11× 1 13×13×11;
(2 5+ 3 10)× 10 3; 13 49×21+28× 13 49; 17 21× 3 4+ 8 21× 3 4- 3 4;
(3 4+ 5 8)×8×4;
34÷35×36;8 11× 7 25+ 7 11× 3 25.
参考答案
=1011×11×113×13,
=10×1,
=10;
(25+310)×103,
=25×103+310×103,
=113+1,
=213;
1349×21+28×1349,
=(21+28)×1349,
=49×1349,
=13;
1721×34+821×34-34,
=(1721+821-1)×34,
=421×34,
=17;
(34+58)×8×4,
=34×4×8+58×8×4,
=24+20,
=44;
34÷35×36,
=3435×(35+1),
=3435×35+3435×1
=34+3435,
=343435;
811×725+711×325,
=711×825+711×325,
=711×(825+325),
=711×1125,
=725.考点: