四、计算题 一、计算 1、直接写出得数 (1)小数口算
10-3.94= 3.5-12-0.8= 1.25×8×4= 1÷0.01= 1.25×32×0.25= 2.37×0.98×0= 0.25×(0.9+0.9+0.9+0.9)= 36÷0.125÷8= 72÷0.8= 6.04×1000= 10.25-0.5= 0.26+17.4= 0.25×8= 0.436×99+0.436= 15-0.75-0.25= 3.74-1.4= 0.75÷0.075= 0.35÷0.7= 13.6+2.4= 8.5÷1.7= 6.5×2.5= 13.7-2.7×2= 3.6+5.4= 3.4-2.83= 10.5-0.32= 5.2÷2.6= 9.36÷10= 4.09-3.9= 3.1÷0.25= 28÷0.7= 4÷0.125= 7.5+5= 0.68÷1.7= 1.2×1.1= 7.81-2.9= 0.24×5= 0.3÷0.05= 0.25×4÷0.25×4= 0.37+6.3= 6.4-0.64= 0.7÷0.63= 12.8+0.29= 3.5÷0.05=
(2)分数口算
111111125-= -×= (+)×24= 2--= 2855546771111111131÷-÷1= += -×= 0÷+=
334522374112521(+)×36= ×= -×0= 9657344-
71411192223-= 24×(-+)= -+= 5--= 1313236117115523121315163812÷= (+)×12= -= ÷1=
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11313652515181111×÷×= ÷2= ×÷ 3×8= 727294222113113+8×= 1-= 1-×5= 1--= 244888177142÷= ÷2= ×9-1= += 8866331425155÷= ×= 15÷= ÷5= 3363785632711÷= ÷6= ×= ÷=
8710910141-×= 1--= ×12= ×=
491812
(3)整数口算
600-397= 289-199= 500-299= 437-199= 152-98= 2400÷60= 318-101= 51÷17= 8160÷68= 1995÷19= 2412÷12= 39026÷13= 2448÷24= 3000÷60= 120÷24= 2018= 1652×0÷2997= 25×32×125= 338÷10=
37×125×8= 4×93×25= 12÷1000= 588×2×5=
(4)百分数口算
7÷1%= 1-20%= 25%+= 24÷24%= 7%÷7%= 13%+0.87= 60%-20%= 1-13.5%= 4×5%+16×5%= 20%×5= 3+15×5%= 8÷60%= 2÷4-10%= 12÷25%= 4÷5%= 40%÷= 1÷12.5%= 8×125%= 4×25%= 14÷7%=
2、怎样简便就怎样算
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3425121×84×
3512× 1.37×128-28×1.37 +1.7++5.3 1121330.4×71+×28+40% 25519287115×51+5÷ ÷+× 28191251112
1118×16+8÷1615 15.8
3310+10×69 74.8
-718+14.2-1118+49+59+35.2 10-73 / 12
125×99+125÷9-19×2