153+54+71×46+82×461234567898²-1234567897×1234567899(12345678+23456781+34567812+……81234567)÷69999×1111+3333×666712345679×720(32.8×91-16.4×92-1.75×656)÷0.2)²12345654321×(1+2+3+4+5+6+5+4+3+2+1)是哪个数的平
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 03:56:12
![153+54+71×46+82×461234567898²-1234567897×1234567899(12345678+23456781+34567812+……81234567)÷69999×1111+3333×666712345679×720(32.8×91-16.4×92-1.75×656)÷0.2)²12345654321×(1+2+3+4+5+6+5+4+3+2+1)是哪个数的平](/uploads/image/z/33800-32-0.jpg?t=153%2B54%2B71%C3%9746%2B82%C3%97461234567898%26%23178%3B-1234567897%C3%971234567899%EF%BC%8812345678%2B23456781%2B34567812%2B%E2%80%A6%E2%80%A681234567%EF%BC%89%C3%B769999%C3%971111%2B3333%C3%97666712345679%C3%97720%EF%BC%8832.8%C3%9791-16.4%C3%9792-1.75%C3%97656%EF%BC%89%C3%B70.2%EF%BC%89%26%23178%3B12345654321%C3%97%EF%BC%881%2B2%2B3%2B4%2B5%2B6%2B5%2B4%2B3%2B2%2B1%EF%BC%89%E6%98%AF%E5%93%AA%E4%B8%AA%E6%95%B0%E7%9A%84%E5%B9%B3)
153+54+71×46+82×461234567898²-1234567897×1234567899(12345678+23456781+34567812+……81234567)÷69999×1111+3333×666712345679×720(32.8×91-16.4×92-1.75×656)÷0.2)²12345654321×(1+2+3+4+5+6+5+4+3+2+1)是哪个数的平
153+54+71×46+82×46
1234567898²-1234567897×1234567899
(12345678+23456781+34567812+……81234567)÷6
9999×1111+3333×6667
12345679×720
(32.8×91-16.4×92-1.75×656)÷0.2)²
12345654321×(1+2+3+4+5+6+5+4+3+2+1)是哪个数的平方?
153+54+71×46+82×461234567898²-1234567897×1234567899(12345678+23456781+34567812+……81234567)÷69999×1111+3333×666712345679×720(32.8×91-16.4×92-1.75×656)÷0.2)²12345654321×(1+2+3+4+5+6+5+4+3+2+1)是哪个数的平
153+54+71×46+82×46
=153+54+(71+82)*46
=153*1+153*46+54
=153*47+54
=(100+53)*(100-53)+54
=100²-53²+54
=10000-(53²-3²)+45
=10000-56*50+45
=7245
7245
1234567898²-1234567897×1234567899
=1234567898² -(1234567898-1)*(1234567898+1)
=1234567898²-(1234567898²-1²)
=1
(12345678+23456781+34567812+……81234567)÷6
这条按位来计算
= [(1+2+3+……8)千万+(2+3+4……+1)百万+……(8+1+2+……7)个 ] /6
= (36千万+36百万+36十万+……+36个)/6
= 66666666
9999×1111+3333×6667
=9999×1111 + 3333*6666+3333
=1111*1111*9+1111*1111*3*6+1111*3
=1111*1111*(9+18)+1111*3
=1111*3*1111*9+1111*3
=1111*3*(1111*9+1)
=1111*3*10000
=33330000
第一题:(71+82)*46+153+54=153*46+153+54=153*47+54=7245
第二题
1234567898²-(1234567898-1)*(1234567898+1)
=1234567898²-(1234567898²-1)
=1
第四题
9999×1111+3333×6667
=3*3333*1111+3333*6667
=3333*3333+3333*6667
=3333*(3333+6667)
=3333*10000
=33330000
好难