小学三年级一道数学题.先计算,再来比一比,找规律.急......

2024年11月14日 17:22
有5个网友回答
网友(1):

26+3=29 26+43=(26+3)+40=29+40=69 26+63=(26+3)+60=29+60=89。

5+38=43 25+38=20+(5+38)=20+43=63 55+38=50+(5+38)=50+43=93。

42+8=50 42+18=(42+8)+10=50+10=60 42+48=(42+8)+40=50+40=90。

19+7=26 19+37=(19+7)+30=26+30=56 19+77=(19+7)+70=26+70=96。

(1)乘法原理:如果因变量f与自变量x1,x2,x3,….xn之间存在直接正比关系并且每个自变量存在质的不同,缺少任何一个自变量因变量f就失去其意义,则为乘法。

(2)加法原理:如果因变量f与自变量(z1,z2,z3…, zn)之间存在直接正比关系并且每个自变量存在相同的质,缺少任何一个自变量因变量f仍然有其意义,则为加法。

网友(2):

题目要求先计算,就可找出规律了
左边按顺序的得数分别是
9,98,987,那按这个规律下一个一定是
1234*8+4=9876
右边的得数依次是
80,880,8880,
那下一个算式和得数一定是
9876*9-4=88880
这种题一定是先要计算以后,才可发现规律的

网友(3):

26+x3=2+x是十位,个位是进0,本9.
x5+38=3+x是十位,个位是进1,本3.
42+x8=4+x是十位,个位是进1,本0.
19+x7=1+x是十位,个位是进1,本6.

网友(4):

我想规律是着样的:
26+3=29 26+43=(26+3)+40=29+40=69 26+63=(26+3)+60=29+60=89
5+38=43 25+38=20+(5+38)=20+43=63 55+38=50+(5+38)=50+43=93
42+8=50 42+18=(42+8)+10=50+10=60 42+48=(42+8)+40=50+40=90
19+7=26 19+37=(19+7)+30=26+30=56 19+77=(19+7)+70=26+70=96
我不知道对不对...... 但我尽力了!

网友(5):

26+3=29下面两道题的答案都有九,42+8=50下面两道题的答案都有零
5+38=43下面两道题的答案都有三,19+7=26下面两道题的答案都有六

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