如题所述
(1)101×99
=(100+1)×99
=100×99+99
=9999
(2)14×35
=7×2×35
=7×70
=490
(3)25×28
=25×4×7
=100×7
=700
(4)4×9×25
=4×25×9
=100×9
=900
(5)43×5×4
=43×20
=860
(6)15×12
=15×2×6
=30×6
=180追答
=(100+1)×99
=100×99+99
=9999
(2)14×35
=7×2×35
=7×70
=490
(3)25×28
=25×4×7
=100×7
=700
(4)4×9×25
=4×25×9
=100×9
=900
(5)43×5×4
=43×20
=860
(6)15×12
=15×2×6
=30×6
=180追答
(7)12×(40-5)
=12×40-12×5
=480-60
=420
(8)64×9-14×9
=(64-14)×9
=50×9
=450
(9)35×98
=35×(100-2)
=35×100-35×2
=3500-70
=3430
(10)23×134-34×23
=23×(134-34)
=23×100
=2300
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第1个回答 2018-09-17
(1)80✘5✘6
=80✘30
=2400
(2)(25+12)✘4
=25✘4+12✘4
=100+48
=148
(3)45✘5✘10
=(45✘10)✘5
=450✘5
=2250
(4)58+79+42
=(58+42)+79
=100+79
=179
=80✘30
=2400
(2)(25+12)✘4
=25✘4+12✘4
=100+48
=148
(3)45✘5✘10
=(45✘10)✘5
=450✘5
=2250
(4)58+79+42
=(58+42)+79
=100+79
=179
第2个回答 2020-03-18
(46+28)60=74X60=4440
42X50-17=2083
32+105/5=32+21=53
42OX(327一238)=420x89=37380
42X50-17=2083
32+105/5=32+21=53
42OX(327一238)=420x89=37380
第3个回答 2019-03-17
375+219+381+225
5001-247-1021-232
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
5001-247-1021-232
(181+2564)+2719
378+44+114+242+222
276+228+353+219
(375+1034)+(966+125)
第4个回答 2019-01-12
135×35-35×35
=35×(135-35)
=35×100
=3500
=35×(135-35)
=35×100
=3500