640÷80= 15×5= 23×3= 12×2×5= 480÷80= 16×5= 27×3= 90÷15= 48÷4= 640÷16= 39÷3= 24×20= 32×3= 48÷16= 12×8= 27×3= 56÷14= 24÷8= 14×2= 83－45= 560÷80= 96÷24= 40÷20= 40×30= 37＋26= 76－39= 605＋59= 30×23= 12×8= 5.3×0.3= 4.4×0.3= 4×8.8= 4.1×0.8= 9.9×0.6= 6.4×0.6= 4×9.7= 9.8×0.3= 4.8×0.5= 0.6×7.5= 4.2×1.8= 8.6×0.4= 3×4.3= 0.2×5.6= 9.4×0.8= 5.4÷10= 0.45÷0.15= 3.6÷0.1= 3.2÷100= 8.5÷ 1.7= 1.2÷0.3 = 0.49÷0.7= 0.096÷0.03= 84÷4.2= 0÷0.25= 1÷0.01= 7.2÷0.9= 9.3÷0.3= 4÷0.4= 10－4.4＝ 6＋6.6＝ 9.5－2.7＝ 1－0.55＝ 3.7＋4.8＝ 7＋3.3＝ 0.9＋1＝ 45÷3＝ 2.7＋3.9＝ 18×4＝ 416÷4＝ 1－0.44＝ 0．7＋0．9= 1－0.98= 3．25＋0．75= 14．6－0．4= 10－0．1= 14＋0．78= 1－0．3= 564+234= 236+897= 961-564= 597-348= 8.5×100= 3.2÷100= 0.18×0.3= 8.5÷ 1.7= 1.2÷0.3 = 0.49÷0.7= O .04×25= 0.096÷0.03= 84÷4.2= 1000×0.756= 2.5×1.47×0.4=0.5×100= 8.7+0.03= 0.9＋0.1= 1－0.8= 4.5－4= 5.6＋4= 5.7＋3.3= 10－4.4= 6＋6.6= 9.5－2.7= 73.4+52.1= 258+456= 二、计算 3.8×2.5 三、简便计算16.12×99+16.12 四、解方程 4.5x+3.4=16.9 五、几何知识 51.84÷5.4 2.64＋3.85＋1.54 8.8x=10.56 5.6 ×2.8 126÷3＋24÷3 7.3x-5.6x=64.6 13.7×0.25×400 49.3-15x=25.3 708－665= 0.45÷0.5= 1.25×80= 0.15×8= 二、计算 4.02×300= 9.8×10= 12×0.5= 6.1÷2= 6.8＋3.2= 100－32.5= 2.5÷25= 0.9＋0.99= 400÷0.1= 4.5×3= 3.1×0.5= 0.83＋0.2= 2.02×9= 30.3÷3= 2.74÷2= 6÷0.02= 2.76－0.36= 0.06×0.9= 5.8＋3.4= 328＋708= 25×0.01= 4.1×0.5= 19.04÷2= 0.74－0.24= 36.05÷5= 0.2÷0.01= 8.73÷0.9= 0.72÷0.3= 0.46÷0.1= 0.22÷0.2= 3.45÷0.5= 4.62÷0.6= 1.92÷0.4= 0.9÷0.3= 5.11÷0.7= 0.35÷0.1= 0.44×2= 0.25×40= 0.2×0.5= 6.4÷3.2= 7.5＋5.4= 0.01×0.9= 42÷0.7= 0.7＋12.4= 0.25＋0.75= 12×0.5= 16÷1.6= 5.4÷1.8= 25×0.04= 10－5.6= 1.23÷3= 8－2.6= 63÷0.09= 6.2÷0.2= 7.8＋2.2= 5.4÷0.9= 0.84÷6= 0.7×5= 5.5＋3.6= 300×1.2= 6.25÷5= 1.2÷0.3 = 0.49÷0.7= O.04×25= 0.096÷0.03= 84÷4.2= 1000×0.756= 0.5×100= 2.5×1.47×0.4= 0÷0.25= 1÷0.01= 1.25×8= 3.8×2= 7.2÷0.9= 6.3÷9= 7.2÷0.6= 4.2÷1.4= 3.9÷3.9= 0÷6.81= 1.47×0.4= 0.4×0.25＝ 14＋0．78= 1－0．3= 5－0．08= 1．1－1= 1．64＋2．35= 8． 34－6．22= 12 ．6＋3．4= 9.3÷0.31= 0.56÷0.28= 6.1 －2.08= 5.2×8= 7.2÷40= 4.3÷0.01= 0.06×0.8= 6.52－5.12= 3.6＋1.8= 32＋0.7= 25×0.01= 4.1×0.5= 5.8×2.3 三、简便计算 0.42×4×0.25 四、解方程 4.6x+3.4=21.8 五、几何知识 23.25÷2.5 10.64-3.45-1.55 9.9x=33.66 19.56 ÷2.8 522÷3＋78÷3 8.3x-2.6x=35.91 7.8×3.4+7.8×6.6 52.3-8.3x=10.8 本文来源：https://www.wddqw.com/doc/6f6befe19dc3d5bbfd0a79563c1ec5da50e2d6c7.html