1混合运算(20)
126.8 100.7-28.9 1/3×2÷1/3×2
2054-1728÷32 4/5×2/3 1/2÷1/6
1/3 (4/5-2/3)×5/3
7/8÷[(1-1/6)X7/20]
57.48-23.96 24.52-56.04
7/8÷9×3/5÷35/72
1.25×1.6÷0.7 0.84÷0.003×1/4
2037-2037÷21 4375 884÷26×25
1/9 8/9÷8/27 1-1/6÷6/7×7/6
8×1/8 7/8×8/7 1/2 5/4 3/2-1/4
123.19 2.4 12.81 14.6
17.2-3.4 2.8-16.6
20.9 16.5 48.5 14.1 ( 24×37 37)x4
2简便运算(20)
8.16-3.875-2.125-1.16
9 99 999 9999 99999
20.9 17.5 48.5 13.1
3/4 5/8 1/4 3/8
5.39 4.61-2/7-5/7
54.78-2.59-7.41 97 96 98 99
354-(154-56) 10-0.94-0.96-0.98
600-99-98-97 5-(1-5/8)
467×101-467 2.82×99一 2.82
2.5×3.2×12.5×100
5.8÷0.7 0.42÷0.07 40÷7
265×9.9 376×999
75.6÷0.25÷0.7÷4
0.125×0.75 1/8×4.25 12.5%
2.01×86-201×0.18 2010×0.032
3难度加深,简便计算(10)
9000÷25÷4 72000×125
9999×8889 3333×3333
2018÷(2018 2018/2019)
20.19×37 2019×0.82-201.9×1.9
999² 1999
756×213÷27 765×327÷27
1/2018 2016÷(2016 2016/2017)
2×3×4 3×4×5 4×5×6 …… 30×31×32
1/2 1/4 1/8 1/16 1/32 1/64