解方程、简便运算强化训练
一、解方程。
123327 3X= X÷= ÷X=
8
X4=30%
X×35=20×14 50% X +
X - 15%X = 68 X
X+738X=4
6X+5 =13.4 4 X
4 X-3 ×9 = 29 5X7163255 X = 72 X-0.25=45 X = 3.6 25% X + 15%X = - 237 X =4 X12 X + 16 X = 4 X+-6=38 -3×
521=57 4X51014
45
+38X=121
14X=20
34X+14=38 -6×23=2
332
0.36×5- X = X - 0.8 X = 16+6 ( X - 4.5) = 7
45
23X÷14=12 2(X-2.6)=8
X×( 13136 + 8 )=12 X
X - 45 X -4= 21 4+0.7X=102
二、简便运算。
-0.375 X =5632135 X-3 X=10 20 X– 8.5= 1.5
1
2 X - 25% X = 10
7134
( - )×60 36× 0.65×101 12535
311311(1.25-0.125)×8 25 ×8 24×(---)
(12+27) ×7
47 ×613 +37 ×613 27.5
710 ×101- 710
725×103-725×2-725
2.25×4.8+77.5×0.48
812863 13×10.2 2.6×99
×3.7-7.5×3.7 79÷115+79×511 35 × 99 + 31673135 5×13-5÷7
0.92×1.41+0.92×8.59
4.8×7.8+78×0.52 1.3×11.6-1.6×1.3 2272
×(15× )× 4.36×12.5×8 2.5×32×1.25 272815
2×0.8 9.6÷3.2÷3 15.2÷0.25÷4 1.25÷
3
89 ×89 ÷889 ×9
12.89-(3.89-1.6) 73.8-1.64-13.8-5.36 15.75+3.59-0.59+14.25
5.48-(9.4-0.52)
二、简便运算。
(712 - 15 )×60
38×3÷38×3 12.06+5.07+2.94 36×3435 146.5-(23+46.5) 30.34+9.76-10.34 0.65×101
8 2538 ×8 24×( - - - ) (1.25-0.125)×
(12+ ) ×7 13×10.2 2.6×99 X - 45 X
-4= 21
47 ×613 +37 ×613 0.92×8.59
710 ×101- 710
2.25×4.8+77.5×0.48
227 ×(15×2728 )×215
27.5×3.7-7.5×3.7 35 × 99 + 35 4.8×7.8+78×0.52 4.36×12.5×8 0.92×1.41+ 30.34+9.76-10.34 1.3×11.6-1.6×1.3 2.5×32×1.25