练习题(解方程+简便运算)#精选.

1、计算专项检测姓名:、解方程。3X=2=77 161235 "X=10X=30%4word.XX 3=20X 135X=2572X-0.25=14c,450% X +5X = 3.654233_4X - 15%X=68X一X =X+ -X= 12125% X + 15%X74856X+ 5 =13.44 X一6 = 382x+13 =4 X -3 X9 =294485 =5、，2335X-3X4X-_ 6 X _ =20.36x 5-X =一X - 0.8 X =：16+62173452.(X - 4.5) = 73-X- 1 = 122(X-2.6)=84+0.7X=1021Xx (

2、 6 +3)=旦8，121一 X - 25% X = 10 20 X 28.5= 1.5 X -4一 X -4= 215计算专项检测姓名：二、简便运算。(工-1)X 6036 X340.65 X 101(1.25-0.125 )X 85.48-(9.4-0.52 )12535word.24X(11-122. 252 4. 8+77. 5X 0. 48L X 103-工 X 2-25252547 *工+ |x13 761327.5X 3.7-7.5 X 3.777而 x101- W35X 99 +351654.36X 12.5 X82.5X 32 X 1.2515.2+ 0.25 + 4898*

3、9 *88-x -9979一11 + Zx.5 92.511X 32X 1.25X7133 . 13- 十574.8X 7.8+78 X 0.521.25 +x 0. 839.6 +3.2+33x3. 388x 3146.5- (23+46.5 )12. 89-(3.89-1.6)73.8-1.64-13.8-5.3615.75+3.59-0.59+14.252.6X 99计算专项检测姓名:word.12. 06+5. 07 + 2. 9430. 34+ 9. 76- 10. 344.36 X 12.5 X8二、简便运算。(712 - 15 ) X6036 X34350.65 X101(1.2

4、5-0.125 ) X813 X10.247 >613 +37 X61327.5 X3.7-7.5 M.70.92 X1.41 +0.92 X8.59710 M01- 71035 X 99 + 3530.34 +9.76 - 10.342.25 X4.8+77.5 >0.484.8 X7.8+78 甩521.3 X11.6 1.6 M.3227 %15 >2728 ) X2154.36 X12.5 X82.5 X32 X1.251.25 +X0.815.2 田.25 乂12.06 +5.07 +2.94146.5- (23+46.5 )12.89-(3.89-1.6)73.8

5、-1.64-13.8-5.3615.75+3.59-0.59+14.255.48- (9.4-0.52 )4 X -3 >9 = 295X-3X =4X 6X =20.36 X5- 34 X = 35X - 0.8 X = 16+623 ( X - 4.5) = 7X+ = 122(X-2.6)=8XX 16 + 38 )=1312X-0.375 X =二、简便运算。(712 - 15 ) X6036 X34352538 X8710 M01- 710(12+ ) X713M0.225 X-13 X=3104+0.7X=10220 X 8.5= 1.512 X - 25% X = 100.

6、65 M0135 X 99 + 3527.5 X3.7-7.5 X3.72.6 汉9710 M01- 71047 >613 +37 X6130.92 X1.41 +0.92 X8.592.25 >4.8+77.5 >0.484.8 X7.8+78 X0.521.3 M1.6 1.6 X1.3227 不5 X2728 ) X2154.36 X12.5 X82.5 X32 M.251.25 +X0.89.6与.2与15.2 q.25 F89 X89 比9 X89>X3146.5- (23+46.5 )12.89-(3.89-1.6)73.8-1.64-13.8-5.3615.75+3.59-0.59+14.