8.8×1.25 7.65÷0.85+1.1 23.4÷5.2×3.2
2.35×4.64+5.36×2.35 12.5×1.36×0.8 2.6×10.1
4.4×0.25 25.2÷12+2.9 43.5÷15-1.45
1.87×3.05+8.13×3.05 1.25×0.45×0.8 9.8×3.7
0.44×2.5 2.25×0.4+0.6 31.04÷3.2-4.7
3.26×10.1-0.1×3.26 0.125×9.8×8 102×4.8
2.4×2.5 (27.8-15.6)×0.8 9.12÷57+4.84
12.6×99 90÷25÷4
1.39×6.1+3.9×1.39 0.25×1.6×0.4 10.1×1.9
2.4×1.25 0.48×20.2-4.2 42.72÷0.48+0.52
3、解方程 (1)1.6x?3.2?9.6
(3)9X÷4=135
(6)2X+1.5X =42
(9)x?4.6?19.8
(11)5.16?x?23.36
(2)4x-3?9?29
4)3X-1.6=32.6 (5)7)(X-3)÷2=7.5 (8)(10)6x?10.8
(12)x?0.24?9.5
×30-5X=10 (X-6.2)= 41.6 ( 1.5( 8