40道简便计算带答案(40道简便计算带答案五年级上册)

50道简便计算题及答案

45,加70括号乘以五(1)2.5*32*0.125=(2.5*4)*(8*0.125)(2)3.5-7+6.5=3.5+6.5-7(3)1.2×2.5+0.8×2.5=2.5(1.2+0.8)(4)8.9×1.25-0.9×1.25=1.25(8.9-0.9)(5)12.5×7.4×0.8=12.5×0.8×7.4(6)6.5×9.5+6.5×0.5=6.5×(9.5+0.5)(7)0.35×1.6+0.35×3.4=0.35*(1.6+3.4)(8)6.72-3.28-1.72=6.75-(3.28+1.72)(9)0.45+6.37+4.55=0.45+4.55+6.37(10)28×12.5-12.5×20=(28-20)*12.5(11)23.65-(3.07+3.65)=23.65-3.65-3.07=20-3.07(12)(4+0.4×0.25)8×7×1.25=(4+1)*7*10(13)1.65×99+1.65=1.65*(99+1)=1.65*100(14)27.85-(7.85+3.4)=27.85-7.85+3.4(15)48×1.25+50×1.25×0.2×87.8×9.9+0.78=7.8*(9.9+0.1)(16)4.8×46+4.8×54=(46+54)*4.8=100*4.8(17)673-327-173=673-(327+173)=673-500(18)4.44*2.5=1.11*(4*2.5)=1.11*10(19)3.5÷1.4=(3.5÷0.7)÷(1.4÷0.7)(20)1+2+3+4+5......+99+100=(1+99)+(2+98)+(3+97)+......+(49+51)+50=(100÷2-1)*100+50=4900+50=4950⑴运用加法交换律进行简便计算。0.88+5.6+0.121.78+3.5+0.225.6+2.08+14.4=0.88+0.12+5.6=1.78+0.22+3.5=5.6+14.4+2.08=1+5.6=2+3.5=20+2.08=6.6=5.5=22.08⑵运用加法结合律进行简便计算2.3+(0.56+4.7)28.6+0.54+0.46+1.45.82+4.56+5.44=(2.3+4.7)+0.56=(28.6+1.4)+(0.54+0.46)=5.82+(4.56+5.44)=7+0.56=30+1=5.82+10=7.56=31=15.82⑶、运用乘法交换律进行简便计算。25×0.37×0.47.5×0.39×46.5×1.1×41.25×3.9×0.8=25×0.4×0.37=7.5×4×0.39=6.5×4×1.1=1.25×0.8×3.9=10×0.37=30×0.39=26×1.1=1×3.9=3.7=11.7=28.6=3.9⑷、运用乘法结合律进行简便计算。1.9×7.5×86.2×0.8×2.54.3×1.5×64.1×3.5×2=1.9×(7.5×8)=6.2×(0.8×2.5)=4.3×(1.5×6)=4.1×(3.5×2)=1.9×60=6.2×2=4.3×9=4.1×7=114=12.4=38.7=28.7⑸、运用乘法分配律的加法进行简算。13.6×4.6+4.6×6.40.72×23+77×0.722.6×32+32×2.4=(13.6+6.4)×4.6=(23+77)×0.72=(2.6+2.4) ×32=20×6.4=100×0.72=5×32=128=72=160⑹、运用乘法分配律的减法进行简算。12×5.9-5.9×24.6×2.5-2.5×0.6101×9.7-9.7=(12-2) ×5.9=(4.6-0.6)×2.5=(101-1)×9.7=(12-2) ×5.9=(4.6-0.6)×2.5=(101-1)×9.7=10×5.9=4×2.5=100×9.7=59=10=970⑺、运用减法的运算规律进行简便计算。1.8-0.45-0.5554.4-4.6-5.435.6-0.13-0.47=1.8-(0.45+0.55)=54.4-(4.6+5.4)=35.6-(0.13+0.47)=1.8-1=54.4-10=35.6-0.6=0.8=44.4=35⑻、运用除法的运算规律进行简便计算。4.5÷4÷7.514.8÷1.25÷818.5÷4÷1.255.4÷4÷0.45=4.5÷(4×7.5)=14.8÷(1.25×8)=18.5÷(4×1.25)=5.4÷(4×0.45)=4.5÷30=14.8÷10=18.5÷5=5.4÷0.18=0.15=1.48=3.7=30⑼综合运用各种运算定律进行简算。2.54+2.46+0.44+0.5410.7×0.4-6.7×0.40.5×3.2×1.25=(2.54+2.46)+(0.44+0.54)=(10.7-6.7)×0.4=(0.5×4)×(0.8×1.25)=5+1=4×0.4=2×1=6=1.6=289.7+5.8-9.7+4.299×0.38+0.38360÷(18×0.4)=(89.7-9.7)+(5.8+4.2)=(99+1) ×0.38=360÷18÷0.4=80+10=100×0.38=20÷0. 4=90=38=504.8×12.52.5×1.6×12.53.2×102=0.6×(8×12.5)=(2.5×0.2)×(8×12.5)=3.2×(100+2)=0.6×100=0.5×100=3.2×100+3.2×2=60=50=320+6.4(1)2.5*32*0.125=(2.5*4)*(8*0.125)(2)3.5-7+6.5=3.5+6.5-7(3)1.2×2.5+0.8×2.5=2.5(1.2+0.8)(4)8.9×1.25-0.9×1.25=1.25(8.9-0.9)(5)12.5×7.4×0.8=12.5×0.8×7.4(6)6.5×9.5+6.5×0.5=6.5×(9.5+0.5)(7)0.35×1.6+0.35×3.4=0.35*(1.6+3.4)(8)6.72-3.28-1.72=6.75-(3.28+1.72)(9)0.45+6.37+4.55=0.45+4.55+6.37(10)28×12.5-12.5×20=(28-20)*12.5(11)23.65-(3.07+3.65)=23.65-3.65-3.07=20-3.07(12)(4+0.4×0.25)8×7×1.25=(4+1)*7*10(13)1.65×99+1.65=1.65*(99+1)=1.65*100(14)27.85-(7.85+3.4)=27.85-7.85+3.4(15)48×1.25+50×1.25×0.2×87.8×9.9+0.78=7.8*(9.9+0.1)(16)4.8×46+4.8×54=(46+54)*4.8=100*4.8(17)673-327-173=673-(327+173)=673-500(18)4.44*2.5=1.11*(4*2.5)=1.11*10(19)3.5÷1.4=(3.5÷0.7)÷(1.4÷0.7)(20)1+2+3+4+5......+99+100=(1+99)+(2+98)+(3+97)+......+(49+51)+50=(100÷2-1)*100+50=4900+50⑴运用加法交换律进行简便计算。0.88+5.6+0.12=0.88+0.12+5.6=1+5.6=6.61.78+3.5+0.22=1.78+0.22+3.5=2+3.5=5.55.6+2.08+14.4 =5.6+14.4+2.08=20+2.08=22.08⑵运用加法结合律进行简便计算2.3+(0.56+4.7) =(2.3+4.7)+0.56 =7+0.56 =7.5628.6+0.54+0.46+1.4 =(28.6+1.4)+(0.54+0.46) =30+1 =315.82+4.56+5.44 =5.82+(4.56+5.44) =5.82+10=15.82⑶、运用乘法交换律进行简便计算。25×0.37×0.4=25×0.4×0.37=10×0.37=3.77.5×0.39×4 =7.5×4×0.39 =30×0.39 =11.76.5×1.1×4 =6.5×4×1.1 =26×1.1 =2.861.25×3.9×0.8=1.25×0.8×3.9=1×3.9 =3.9⑷、运用乘法结合律进行简便计算。1.9×7.5×8=1.9×(7.5×8) =1.9×60=1146.2×0.8×2.5=6.2×(0.8×2.5) =6.2×2=12.44.3×1.5×6=4.3×(1.5×6) =4.3×9=38.74.1×3.5×2 =4.1×(3.5×2)=4.1×7=28.7⑸、运用乘法分配律的加法进行简算。13.6×4.6+4.6×6.4=(13.6+6.4)×4.6=20×4.6=920.72×23+77×0.72 =(23+77)×0.72=100×0.72 =722.6×32+32×2.4 =(2.6+2.4) ×32 =5×32 =160⑹、运用乘法分配律的减法进行简算。12×5.9-5.9×2=(12-2) ×5.9 =10×5.9=594.6×2.5-2.5×0.6 =(4.6-0.6)×2.5=4×2.5 =10101×9.7-9.7 =(101-1)×9.7=100×9.7=970⑺、运用减法的运算规律进行简便计算。1.8-0.45-0.55=1.8-(0.45+0.55) =1.8-1 =0.854.4-4.6-5.4=54.4-(4.6+5.4) =54.4-10=44.435.6-0.13-0.47=35.6-(0.13+0.47)=35.6-0.6=35⑻、运用除法的运算规律进行简便计算。4.5÷4÷7.5=4.5÷(4×7.5)=4.5÷30=0.1514.8÷1.25÷8=14.8÷(1.25×8)=14.8÷10 =1.4818.5÷4÷1.25=18.5÷(4×1.25)=18.5÷5 =3.75 .4÷4÷0.45 =5.4÷(4×0.45) =5.4÷0.18=30⑼综合运用各种运算定律进行简算。2.54+2.46+0.44+0.54 =(2.54+2.46)+(0.44+0.54)=5+1 =610.7×0.4-6.7×0.4=(10.7-6.7)×0.4=4×0.4 =1.60.5×3.2×1.25 =(0.5×4)×(0.8×1.25) =2×1 =2158+262+138375+219+381+2255001-247-1021-232(181+2564)+2719378+44+114+242+222276+228+353+219(375+1034)+(966+125)(2130+783+270)+101799+999+9999+999997755-(2187+755)2214+638+2863065-738-1065899+3442357-183-317-3572365-1086-214497-2992370+19953999+4981883-398138×25×4(13×125)×(3×8)(12+24+80)×5025×32×12532×(25+125)178×101-17884×36+64×8475×99+2×7583×102-83×2123×18-123×3+85×12350×(34×4)×325×(24+16)178×99+17879×42+79+79×577300÷25÷48100÷4÷7516800÷12030100÷210032000÷40049700÷7001248÷243150÷154800÷2521500÷1252356-(1356-721)1235-(1780-1665)75×27+19×2 531×870+13×3104×(25×65+25×28)

小学计算题及答案(40道)

879+54=933 ...896-546=350 ...56×12=672.... 45-5=9... 457+456=913... 7+14=21 ... 18-9=9... 8+16=24 ... 25-5=20... 9+18=27... 56-45=11... 10+20=30... 45-23=22... 11+22=33... 78-23=55... 12+24=36... 10-3=7 15-4=11 20-5=15 25-6=19 30-7=23 35-8=27 40-9=31 45-10=35 50-11=39 55-12=43 60-13=47 65-14=51 70-15=55 75-16=59 80-17=63 85-18=67 90-19=71 95-20=75 100-21=79 105-22=83 110-23=87 115-24=91 120-25=95 125-26=99 130-27=103 13+26=39... 14+28=42... 15+30=45... 16+32=48... 17+34=51... 18+36=54... 19+38=57... 20+40=60... 21+42=63... 22+44=66... 23+46=69... 24+48=72... 25+50=75... 26+52=78... 27+54=81... 28+56=84... 29+58=87... 30+60=90... 31+62=93... 32+64=96... 33+66=99... 5 ÷1 =5 10 ÷2 =5 15 ÷3 =5 20 ÷4 =5 25 ÷5 =5 30 ÷6 =5 35 ÷7 =5 40 ÷8 =5 45 ÷9 =5 50 ÷10 =5 55 ÷11 =5 60 ÷12 =5 65 ÷13 =5 70 ÷14 =5 75 ÷15 =5 80 ÷16 5 85 ÷17 5 90 ÷18 5 95 ÷19 5 100 ÷20 5 2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18 12÷3/5=12×( 5/3) 9÷6/7=9×( 7/6 ) 30÷5/6=30×(6/5 ) 4×(3/2 )=4÷2/3 ( 4 )÷5/7=4×7/5 3÷4/5=3×5/4 ( 24 )÷7/16=24×(16/7 ) A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7 2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18 字数上限了没办法再给题了望采纳!879+54=933 ...896-546=350 ...56×12=672.... 45-5=9... 457+456=913... 7+14=21 ... 18-9=9... 8+16=24 ... 25-5=20... 9+18=27... 56-45=11... 10+20=30... 45-23=22... 11+22=33... 78-23=55... 12+24=36... 10-3=7 15-4=11 20-5=15 25-6=19 30-7=23 35-8=27 40-9=31 45-10=35 50-11=39 55-12=43 60-13=47 65-14=51 70-15=55 75-16=59 80-17=63 85-18=67 90-19=71 95-20=75 100-21=79 105-22=83 110-23=87 115-24=91 120-25=95 125-26=99 130-27=103 13+26=39... 14+28=42... 15+30=45... 16+32=48... 17+34=51... 18+36=54... 19+38=57... 20+40=60... 21+42=63... 22+44=66... 23+46=69... 24+48=72... 25+50=75... 26+52=78... 27+54=81... 28+56=84... 29+58=87... 30+60=90... 31+62=93... 32+64=96... 33+66=99... 5 ÷1 =5 10 ÷2 =5 15 ÷3 =5 20 ÷4 =5 25 ÷5 =5 30 ÷6 =5 35 ÷7 =5 40 ÷8 =5 45 ÷9 =5 50 ÷10 =5 55 ÷11 =5 60 ÷12 =5 65 ÷13 =5 70 ÷14 =5 75 ÷15 =5 80 ÷16 5 85 ÷17 5 90 ÷18 5 95 ÷19 5 100 ÷20 5 2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=18 12÷3/5=12×( 5/3) 9÷6/7=9×( 7/6 ) 30÷5/6=30×(6/5 ) 4×(3/2 )=4÷2/3 ( 4 )÷5/7=4×7/5 3÷4/5=3×5/4 ( 24 )÷7/16=24×(16/7 ) A÷C/B=A×B/C 4÷4/5=5 6÷3/4=8 10÷2/5=25 18÷4/9=81/2 4×4/5=16/5 6×3/4=18/4 10×2/5=4 18×4/9=8 3÷3/4=4 2÷1/3=6 6÷4/5=15/2 1÷5/7=7/5 3/4÷3=1/4 1/3÷2=1/6 4/5÷6=2/15 5/7÷1=5/7 2/1*2=1 3/1*3=1 3/2*3=2 3/1*6=2 4/3*8=6 5/3*20=12 7/3*14=6 8/7*40=35 4/3*16=12 9/5*27=15 2/1*30=15 12/7*24=14 30/1*30=1 51/9*102=18 19/9*76=36 4/9*8=18 5/8*90=144 99/98*99=98 3/14*6=28 7/1*28=4 10/1*90=9 5/3*105=63 19/7*38=14 5/1*25=5 8/19*16=38 61/60*122=120 7/2*28=8 6/1*48=8 9/7*18=14 25/7*100=28 9/5*81=45 8/9*16=181. 3/7 × 49/9 - 4/3-5/92. 8/9 × 15/36 + 1/2711/273. 12× 5/6 – 2/9 ×328/34. 8× 5/4 + 1/441/45. 6÷ 3/8 – 3/8 ÷66. 4/7 × 5/9 + 3/7 × 5/97. 5/2 -( 3/2 + 4/5 )8. 7/8 + ( 1/8 + 1/9 )9. 9 × 5/6 + 5/610. 3/4 × 8/9 - 1/311. 7 × 5/49 + 3/1412. 6 ×( 1/2 + 2/3 )13. 8 × 4/5 + 8 × 11/514. 31 × 5/6 – 5/615. 9/7 - ( 2/7 – 10/21 )16. 5/9 × 18 – 14 × 2/717. 4/5 × 25/16 + 2/3 × 3/418. 14 × 8/7 – 5/6 × 12/1519. 17/32 – 3/4 × 9/2420. 3 × 2/9 + 1/321. 5/7 × 3/25 + 3/722. 3/14 ×× 2/3 + 1/623. 1/5 × 2/3 + 5/624. 9/22 + 1/11 ÷ 1/225. 5/3 × 11/5 + 4/326. 45 × 2/3 + 1/3 × 1527. 7/19 + 12/19 × 5/628. 1/4 + 3/4 ÷ 2/329. 8/7 × 21/16 + 1/230. 101 × 1/5 – 1/5 × 2131.50+160÷40 (58+370)÷(64-45)32.120-144÷18+3533.347+45×2-4160÷5234(58+37)÷(64-9×5)35.95÷(64-45)36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷(9+31×11) (136+64)×(65-345÷23)38.85+14×(14+208÷26)39.(284+16)×(512-8208÷18)40.120-36×4÷18+35

简便运算大全及答案。

38×25×4

42×125×8

25×17×4

(25×125)×(8×4)

49×4×5

38×125×8×3

(125×25)×4

5 ×289×2

(125×12)×8

125×(12×4)

(80+4)×25

(20+4)×25

(125+17)×8

25×(40+4)

15×(20+3)常见以下几类题型:

一、运用加法结合律进行简算

(a+b)+c=a+(b+c) 或a+b+c+d=(a+c)+(b+d)

例1、5.76+13.67+4.24+6.33

=(5.76+4.24)+(13.67+6.33)

=10+10

例2、37.24+23.79-17.24

=37.24-17.24+23.79

=20+23.79

=43.79

二、运用乘法结合律进行简算:这种题型往往含特殊数字之间相乘

(a×b)×c=a×(b×c)

特殊数字之间相乘:

25×4=100125×8=1000 25×8=200 125×4=500

例3、 4×3.78×0.25

=4×0.25×3.78

=1×3.78

=3.78

例4、 125×246×0.8

=125×0.8×246

=100×246

=24600

2.5×0.125×8×4等,如果遇到除法同样适用,或将除法变为乘法来计算。如:8.3×67÷8.3÷6.7等。

三、利用乘法分配律进行简算:

(a+b)×c=a×c+ b×c

(a-b)×c=a×c- b×c

做这种题,一定不要急着去算,先要分析各数字之间的特殊关系。也就是先要仔细观察,找到做题的窍门。

例5、(2.5+12.5)×40

=2.5×40+12.5×40

=100+500

30道简便运算带答案

1、56+31+24

=(56+24)+31

=80+31

2、615+475+125

=615+(475+125)

=615+600

=1215

3、125×64

=125×8×8

=1000×8

=8000

4、 89+101+111

=101+(89+111)

=101+200

5、24+127+476+573

=(24+476)+(127+573)

=500+700

=1200

6、400-273-127

=400-(273+127)

=400-400

7、327+(96-127)

=327-127+96

=200+96

8、70×98

=70×(100-2)

=7000-140

=6860

9、442-103-142

=442-142-103

=300-103

10、999+99+9

=1000+100+10-3

=1110-3

=1107

11、67×5×2

=67×(5×2)

=67×10

12、25×(78×4)

=25×4×78

=100×78

=7800

13、72×125

=9×(8×125)

=9×1000

=9000

14、9000÷125÷8

=9000÷(125×8)

=9000÷1000

15、400÷25

=400÷100×4

16、25×36

=25×4×9

=100×9

17、103×27

=(100+3)×27

=2700+81

=2781

18、76×102

=76×(100+2)

=7600+152

=7752

19、3600÷25÷4

=3600÷(25×4)

=3600÷100

20、99×35

=(100-1)×35

=3500-35

=3465

21、(25+12)×4

=25×4+12×4

=100+48

22、56×27+27×44

=(56+44)×27

=100×27

=2700

23、56×99+56

=56×(99+1)

=56×100

=5600

24、125×25×8×4

=125×8×(25×4)

=1000×100

=100000

25、25×32×125

=(25×4)×(8×125)

=100×1000

=100000

4.02-3.5+0.98 7.08-0.74-1.26 7.75×[20÷(3.24-3.04)]4.05÷0.81+2.4 3.7×4.5-4.4×3.7 0.034×0.5×0.628.92-(13.2+8.92)

最后五题自己看看吧HK里咯来PK会我陪1、56+31+24

=(56+24)+31

=80+31

2、615+475+125

=615+(475+125)

=615+600

=1215

3、125×64

=125×8×824×99+241000×32×25

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