45—50道五年级递等试计算（附答案）可以使简便算法,等要附答案~!不要光给式子不给答案哦……谢谢大家‘’随便什么题目，不过要递等式，要求附答案，。

Question

45—50道五年级递等试计算（附答案）
可以使简便算法,等
要附答案~!
不要光给式子不给答案 哦……
谢谢大家‘’
随便什么题目，不过要递等式，要求附答案，。

Answer 1

0.64×25×7.8+2.2 =0.16*4*25*7.8+2.2 =0.16*100*7.8+2.2 =16*7.8+2.2 =127 2÷2.5+2.5÷2 =4/5+5/4 =2.05 194－64.8÷1.8×0.9 =194-36*0.9 =194-32.4 =161.6 36.72÷4.25×9.9 =8.64*9.9 =85.536 5180－705×6 =5180-4230 =950 24÷2.4－2.5×0.8 =10-2 =8 (4121+2389)÷7 =6510/7 =930 671×15-974 =10065-974 =9091 469×12+1492 =5628+1492 =7120 405×(3213-3189) =405*24 =9720
(73-14)+(8-2)=59+6=65,(73-14)+(8-6)=59+2=61,(73-19)+(8-2)=54+6=60
(73-19)+(8-6)=54+2=56,(73-54)+(8-2)=19+6=25,(73-54)+(8-6)=19+2=21
(73-59)+(8-2)=14+6=20,(73-59)+(8-6)=14+2=16,(81-24)+(9-3)=57+6=63
(81-24)+(9-6)=57+3=60,(81-27)+(9-3)=54+6=60,(81-27)+(9-6)=54+3=57
(81-35)+(9-2)=46+7=53,(81-35)+(9-7)=46+2=48,(81-36)+(9-2)=45+7=52
(81-36)+(9-7)=45+2=47,(81-45)+(9-2)=36+7=43,(81-45)+(9-7)=36+2=38
(81-46)+(9-2)=35+7=42,(81-46)+(9-7)=35+2=37,(81-54)+(9-3)=27+6=33
(81-54)+(9-6)=27+3=30,(81-57)+(9-3)=24+6=30,(81-57)+(9-6)=24+3=27
(83-14)+(7-2)=69+5=74,(83-14)+(7-5)=69+2=71,(83-19)+(7-2)=64+5=69
(83-19)+(7-5)=64+2=66,(83-24)+(7-1)=59+6=65,(83-24)+(7-6)=59+1=60
(83-29)+(7-1)=54+6=60,(83-29)+(7-6)=54+1=55,(83-54)+(7-1)=29+6=35
(83-54)+(7-6)=29+1=30,(83-59)+(7-1)=24+6=30,(83-59)+(7-6)=24+1=25
(83-64)+(7-2)=19+5=24,(83-64)+(7-5)=19+2=21,(83-69)+(7-2)=14+5=19
(83-69)+(7-5)=14+2=16,(86-27)+(4-1)=59+3=62,(86-27)+(4-3)=59+1=60
(86-29)+(4-1)=57+3=60,(86-29)+(4-3)=57+1=58,(86-57)+(4-1)=29+3=32
(86-57)+(4-3)=29+1=30,(86-59)+(4-1)=27+3=30,(86-59)+(4-3)=27+1=28
(91-24)+(8-3)=67+5=72,(91-24)+(8-5)=67+3=70,(91-27)+(8-3)=64+5=69
(91-27)+(8-5)=64+3=67,(91-34)+(8-2)=57+6=63,(91-34)+(8-6)=57+2=59
(91-37)+(8-2)=54+6=60,(91-37)+(8-6)=54+2=56,(91-54)+(8-2)=37+6=43
(91-54)+(8-6)=37+2=39,(91-57)+(8-2)=34+6=40,(91-57)+(8-6)=34+2=36
(91-64)+(8-3)=27+5=32,(91-64)+(8-5)=27+3=30,(91-67)+(8-3)=24+5=29