学霸们帮我解一下那四道题
1个回答
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解：
4.25×4.25+5.75×4.25
=4.25×(4.25+5.75)
=4.25×10
=42.5
2.39x39+8.61×39-39
=39×(2.39+8.61-1)
=39×10
=390
37.5×23.7+(40-2.5)×76.3
=37.5×23.7+37.5×76.3
=37.5×（23.7+76.3)
=37.5×100
=3750
2.41-1.72-0.28-0.41
=(2.41-0.41)-(1.72+0.28)
=2-2
=0
此题如仍有疑问，欢迎追问！
4.25×4.25+5.75×4.25
=4.25×(4.25+5.75)
=4.25×10
=42.5
2.39x39+8.61×39-39
=39×(2.39+8.61-1)
=39×10
=390
37.5×23.7+(40-2.5)×76.3
=37.5×23.7+37.5×76.3
=37.5×（23.7+76.3)
=37.5×100
=3750
2.41-1.72-0.28-0.41
=(2.41-0.41)-(1.72+0.28)
=2-2
=0
此题如仍有疑问，欢迎追问！
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