Question

简便计算怎么做

Answer 1

12.5*16*0.5=12.5*8=100
4.8/0.16/0.3=4.8/0.3/0.16=16/0.16=100
48.7-32.76/8.4=48.7-3.9=44.8
0.57*99+0.57=56.43+0.57=57

Answer 2

(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
(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
(11) 957+(128-157)
=957-157+128
=800+128
=928
(12) 706-399
=706-400+1
=307