按规侓填数(1)(),2,3,6,5,10,7,();(2)40,20,(),5;(3) 1,2,4,5,7,8,10,
(+8)+(-10)+(-2)+(+1) (-5)+(+6)+(-3)+(-9)+(+4)+(+7) (+0.65)+(
根据数字猜成语 1,2,3,4,5,6,7( ) 1,3,5,7,9( ) 2,4,6,8,10( ) 1,2,5,6,
找规律.1,2,4,6,7,10,10,( )().1,2,3,5,8,13()()
能简算的要简算 (1)8/75÷4/25+6/25×5/12 (2)20-1/4×2/5 (3)5/6×(7/10+4/
1,3,2,6,5,7,( );1,8,2,7,( );16,96,12,10
(1×2×3+2×4×6+4×8×12+7×14×21)÷(1×3×5+2×6×10+4×12×20+7×21×35)
(1)7/8*1/6÷7/9(2)12*(5/6+5/12)(3)20-2/7*7/10+1/5(4)18/13÷39-
(1 2 3 4 ) (5 6 7 ) (8 9 10)加符号等于1998
(2+4+6+8+10+.+198+200)-(1+3+5+7+9+.+197+199)
找规律 1,8,27,64,(),().1,2,4,6,7,10,10,(),().1,2,3,5,8,13,(),()
()1()2()3()4()5()6()7()8()9()10=-10(括号里只能填+、-号)
求不定积分 (1) (2) (3) (4) (5) (6) (7) ; (8) (9) (10) (11) (12)