9.16 1 7×0.62= 2 0.56 ÷28= 3 54.38-（19.5+4.38）4 （125×25）×45 ＝53256 569-399= 7 12÷43= 8 25÷51= 9 53÷109= 10 91×8.1= 11 7.8 ×0.5= 12 0.85+0.15= 13 3.75 ÷0.25= 14 9×3.14= 15 453+198= 16 3.68-0.82-0.18= 17 578+216= 18 53×49×75= 19 74÷37＝20 100－35.22＝9.17 1 0.3 ÷0.01＝2 31 ÷21 ×433 51 ÷3＋31 ×544 53 ÷（103 ＋85 ）5 （97 －1811）÷18116 54 ÷28×577 722 ÷16×33148 1319 ×76 －76 ×1359 （87 －65 ）÷241110 1.92 ÷0.04 11 1.01 ×99 12 420÷35 13 135÷0.5 14 4.9 ×0.7 15 286+198 16 314-202 17 102×45－328 18 2.8×3.1+17.6 ÷8 19 (50－12.5) ÷2.5 20 3001-1998. 9.18 1 86+(98+14+2)= 2 255+(352+145+48)= 3 (345+377)+(55+23)= 4 9+(80+191)= 5 (268+314+132)+86= 6 5190÷15= 7 495+(278+5)+222= 8 174×36×25= 10 6.8 ×0.55 11 1650÷25= 12 260×8-8-8 ×59= 13 0.83 ×12.5 ×8 14 6975÷25= 15 328-(163-72)= 16 199+(84-99)= 17 885-1-201-298= 18 460-35-3-262= 19 (98+59+2)+41= 20 31×24×25= 9.19 1 9000÷25= 2 502-287-54-159= 3 307+(92+93)= 4 5.38+7.85-5.37= 5 18000÷150÷4= 6 343-188-12= 7 79×24×25= 8 46+15+54= 9 89×245+155×89= 10 92+(79+8+21)= 11 125×88 12 88×102 13 5×289×2 14 4514 ×2115 = 15 5812 ×3629 = 16 9÷43 = 17 6.3 ÷0.07= 18 0.25 ×80-45 ÷0.9= 19 15.9＋10.8 20 1.14+0.98= 9.20 1 100－1.01＝2 4.2 ÷ 0.1 = 3 1000 ÷25×8＝4 139 × 612＝5 578＋216 ＝6 25×125×4×8= 7 3.7+7.6 = 8 6.25×8= 9 30×203= 10 10÷85 = 11 88 ÷322 = 12 8×9＋558= 13 51+ （ ）=100 14 （）+26=73 15 1- 20% = 16 7020 －6245= 17 （）-43=8 18 4×0.09-0.3= 19 0.8×0.3+0.2= 20 10×0.4-0.1= 9.21 1 70.77 ÷100= 2 8×3.9 ×0.125= 3 912+65+83= 4 82.5－3.25 ＝5 2.7 ×12.5 ×0.8= 6 62-（）=18 7 9 ÷0.15= 8 13×(2＋ 713 ) = 9 0.8 ×3.3 ×1.25= 10 5.6-3.27= 11 636－198 = 12 3.6 ÷0.36 = 13 0÷0.875= 14 27+456+73= 15 125×2×8＝16 560÷5÷8= 17 59 ×32 = 18 65 ×52 = 19 3÷23 = 20 525 千克＝（）吨
