三年级数学加减乘除计算题讲解
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/23 16:59:56
那道附加题啊,是472
1.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-(3/2+4/5)
p-q=(a-1)/(a+1)+(b-1)/(a+1)=[(a-1)(b+1)+(a+1)(b-1)]/[(a+1)(b+1)]=0/[(a+1)(b+1)]所以是等于
211+880700-450120+882744-237120-120450+905987-456462-364165+941752-321300-118100+173300-121100+18330
下面各题怎样算简便就怎样算.6.9+4.8+3.10.456+6.22+3.7815.89+(6.75-5.89)4.02+5.4+0.985.17-1.8-3.213.75-(3.75+6.48)3
问题补充:三年级还没有学过小数点,不能用下面各题怎样算简便就怎样算.6.9+4.8+3.10.456+6.22+3.7815.89+(6.75-5.89)4
1.23+(-73)2.(-84)+(-49)3.7+(-2.04)4.4.23+(-7.57)5.(-7/3)+(-7/6)6.9/4+(-3/2)7.3.75+(2.25)+5/48.-3.75+
1.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-(3/2+4/5)
我没有网址,但知道这样的书,你要不要?书名是《小学数学开发题典》(要是三年级的)
95÷5×378÷6×516×4÷815×20÷6021×5÷551÷3×450×12÷3031×32÷412×14÷432÷16×1526×39÷654÷9÷333÷3×945×9×23
25+18+75125-24-7625x27x4125x23x833+46+674x135x2550x23x2267-198321+203189-26-74
当x→0时,tanx=x,那么也有tan2x=2x所以原式=limx/tan2x=x/2x=1/2
20-8×2÷4420×(13+57)×9066×38-987÷21196÷4+56×1216×50-36÷4(73+65)÷(210-164)(13+47)×(52-18)(1024+4370)÷(
264+159+47892-537+469763-386-36372-70÷7-29900-473-227406+369+94683+258-383359+432-18981-81÷9460+177-
345*17=5874-4971=8514-4578=2897/34=5217+4777=9634/3=3335+4536=5487-5478=34567/5478=3587*2=2574+5874=
1、用竖式计算下面各题.234+276=124+325=987-324=875+293=729-273=19÷3=27÷6=78÷9=65÷8=4÷57=
175-75÷2568+35×13725-(125+237)(114+166)÷35432÷(9×8)189-60+40三、简便计算.216+30525×3247+236+646×(15×9)402+
43.120-36×4÷18+3544.(58+37)÷(64-9×5)45.(6.8-6.8×0.55)÷8.546.0.12×4.8÷0.12×4.847.(3.2×1.5+2.5)÷1.648.
48×55=142×23=839÷9=795÷5=78×22=31×81=97×22=57×21=42×79=5.5-4.7=6.6+2.6=6.4-2.8=1-0.5=0.3+0.6=1.5+0.9
180÷9-18(48+52)÷5100-25×420+80×37×(34+56)105×2×5800-57×9(65+16)÷9230×(140-132)24×5+24×7(2534-958)÷87