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25×44是用简便方法用脱式计算

25X(40十4) =25X40十25X4 =1000十100 =1100

列式计算为 25×44 =25×(40+4) =25×40+25×4 =1000+100 =1100 所以原式的结果为1100.

(1)216+384+404+796, =(216+384)+(404+796), =600+1200, =1800; (2)154-(54+98), =154-54-98, =100-98, =2; (3)17×25×4, =17×(25×4), =17×100, =1700; (4)160-60÷2, =160-30, =130; (5)420÷35, =(420÷7)÷(...

44×28-3×44 = 44×(28-3) = 44×25 = (40+4)×25 = 40×25+4×25 = 1000+100 = 1100

0.4×125×25×0.8 =(0.4×25)×(125×0.8) =10×100 =1000 1.25×(8+10) =1.25×8+1.25×10 =10+12.5 =22.5 1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3 =24.9 9999×1001 =9999×(1000+1) =9999×1000+9999×1 =10008999 14.8×6.3-6.3×6.5+8.3×3.7 ...

25÷25×4×4=4×4=16.请采纳哦

=40✘25-4✘25 =1000-100 =900

25×36简便算法脱式计算 25×36 =25*4*9 =100*9 =900

7000÷25÷40 =7000÷(25×40) =7000÷1000 =7

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