小学数学题,速度来解答,在线等

2025-03-16 04:04:48
推荐回答(6个)
回答1:

1、(1)105 (2)990
2、C
因为质数又称素数。指在一个大于1的自然数中,除了1和此整数自身外,没法被其他自然数整除的数。换句话说,只有两个正因数(1和自己)的自然数即为素数。比1大但不是素数的数称为合数。1和0既非素数也非合数。
3、C
4、 999×999×1999=(1000-1)×(1000-1)×(2000-1)=1995003999
现在小学的题怎么比我们那时候难了啊,唉,苦了你们啊,好好学习吧,祝你学习进步哦!

回答2:

105,990
d
a
(100-1)(100-1)(2000-1)=199553999

回答3:

1。105;990。
2。a
3。如果观众增加了一半,理解为是原来的一般的话,选a。如果理解为变为原来的二倍的话选c
4。(1000-1)*(1000-1)*1999=(1000000-1)*1999=1999000000-1999=1998999001

回答4:

105 120
d
c
1995003999

回答5:

(1)如果你会的话,可以用短除法来算答案.我算的是105
(2)c
(3)c
(4)嘻嘻.给你个最正规的格式.
999*999*999
=(100-1)(100-1)(10-1)
=(100*100*100)-(1*1*1)
=1000000000-1
=999999999
参考参考吧.应该会对你有用的.

回答6:

最小105 最大990
d
c
1995003999

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