12+8×25+75,简便计算?
19个回答
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12+8×25+75
=12+8×25+3×25
=12+(8+3)×25
=12+11×25
=12+(10+1)×25
=12+25×10+25×1
=12+250+25
=36+250
=286
望采纳 谢谢~
=12+8×25+3×25
=12+(8+3)×25
=12+11×25
=12+(10+1)×25
=12+25×10+25×1
=12+250+25
=36+250
=286
望采纳 谢谢~
展开全部
12+8×25+75
(1)解:原式=12+8×25+3×25
=12+(8+3)×25
=12+11×25
=12+(10+1)×25
=12+25×10+25×1
=12+250+25
=286
(2)12+8×25+75
解:原式=(12+75)+(2x4×25)
=78+2x100
=278
(1)解:原式=12+8×25+3×25
=12+(8+3)×25
=12+11×25
=12+(10+1)×25
=12+25×10+25×1
=12+250+25
=286
(2)12+8×25+75
解:原式=(12+75)+(2x4×25)
=78+2x100
=278
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回答:12十8ⅹ25十75=8x25十12十75=200十87=287。
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12十8x25十75
=8x25十3x25十12
=25x(8十3)十12
=25x11十12
=275十12
=287
=8x25十3x25十12
=25x(8十3)十12
=25x11十12
=275十12
=287
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原式=12+50+25+8x25=
12+25+25+25+25x8=
12+25x11=12+275=287
12+25+25+25+25x8=
12+25x11=12+275=287
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