第1个回答 2014-12-30
138+293+62+107
=（138+62）+（293+107）
=200+400
=600
=（138+62）+（293+107）
=200+400
=600
第2个回答 2012-01-30
也不知道是几年级的，晕，我就找几道给你，你看能不能用
25x7x4
=25x4x37
=100x37
=3700
(125x12)x8
=(125x8)x12
=1000x12
=12000
44x25
=40x25+4x25
=1000+100
=1100
27x45+27x55
=27x(45+55)
=27x100
=2700
13x102
=13x100+13x2
=1300+26
=1326
800÷25
=（800x4)÷(25x4)
=3200÷100
=32
169+78+22
=169+(78+22）
=169+100
=269
138+293+62+107
=(138+62)+(293+107)
=200+400
=600本回答被网友采纳
25x7x4
=25x4x37
=100x37
=3700
(125x12)x8
=(125x8)x12
=1000x12
=12000
44x25
=40x25+4x25
=1000+100
=1100
27x45+27x55
=27x(45+55)
=27x100
=2700
13x102
=13x100+13x2
=1300+26
=1326
800÷25
=（800x4)÷(25x4)
=3200÷100
=32
169+78+22
=169+(78+22）
=169+100
=269
138+293+62+107
=(138+62)+(293+107)
=200+400
=600本回答被网友采纳
相似回答
