①62×0.98 ②6.4×0.5×0.25 ③4.68÷(4.68÷0.4) ④6.3×103-0.63×30
3.67×99+3.67 75÷4+0.25×25
8÷(2.1-2.09)×0.125 4.8×56.7+0.567×520
4.76×101-4.76 4.8×7.5÷1.5
(4.75×5.47+3.53×4.75)÷4.5
9.999×0.8+1.111×2.8
①16.4÷25÷4
②6.9×3.6+3.6×3.1
③14.4+1.25÷0.5
④(16.8+4.9)÷0.7
3.6×202 2.65-0.5×0.5=
4×0.8×1.25×0.25 9.5×90+95
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1
①26×15﹣200
②8×4×12.5×0.25
③×+
④12÷[()×]
①25×32×1.25
②(+0.375)÷(×)
③×+÷7
④6﹣(+)