文档内容
小学数学简便运算专项练习 400 题
第一部分(1-50题)
12.06+5.07+2.94 30.34+9.76-10.34
×3÷ ×3 25×7×4
34÷4÷1.7 1.25÷ ×0.8
102×7.3÷5.1 17 + -7
1 - - 11 +7 +3
933-15.7-4.3 41.06-19.72-20.28
7 -3 + 8 +2 -
700÷14÷5 18.6÷2.5÷0.41.96÷0.5÷4 1.06×2.5×4
13× ÷ 29÷ ×
19.68-(2.68+2.97) 5.68+(5.39+4.32)
19.68-(2.97+9.68) 7 +( - )
5 -( - ) 0.74÷(71× )
1.25×( 8 ÷0.5) 0.25×( 4 × 1.2)
1.25×( 213×0.8) 9.3÷(4÷ )
24×( - - + ) (12+ ) ×70.92×1.41+0.92×8.59 × - ×
1.3×11.6-1.6×1.3 ×11.6+18.4×
9999+999+99+9 4821-998
3.2×12.5×25 1.25×88
7.6÷0.25 3.5÷0.125
1.8×99+1.8 3.8×9.9+0.38
×103- ×2- 1.01×9.6
102×0.87 2.6×9.9
×31+ × + ÷第二部分(51-100题)
×36 ×38
13.5×27+13.5×72+13.5 1.5×7.4+0.6×150%+2÷
5.3× +2.7×25% 0.67×10.1-6.7
28×21.6-2.8×16 5.6×1.7+0.56×83
×6.6+2.5× --
4.6+++5.4 ×(-÷)
2.8++7.2+ +2.25++
++ -+
+-++ 0.75+++0.375
++++ -(+)
5-- 48.3--
×4.25+÷6 3.6×0.25
0.625×0.5++×62.5% ×÷2.5×(+++) 22×+25×75%-7×0.75
0.25×63.5-× ×2.5-×
+3.125++ +(-1.8)
(111+999) ÷[56×(-)] 49.5×-(50-)×0.6
×+÷+ 45×(+-0.6)
897×-37.5%+104×0.375 ×(-5.375)
3.5×+1.25×+3.8÷ 71×99
3755+2996 8439+1001
446+295 888+999
299×101 563×999
2100÷20 1125-996
6÷0.25 72×156-56×72
第三部分(101-150题)
25×32×125 709×99+709
0.25×48 2.5×-0.4÷22×6.6+2.5×6 75.3×99+75.3
4.6×3.7+54×0.37 0.125×+×8.25+12.5%
11―6―1 15―4.25―5
19.82―6.57―3.43 4.6+3+6+5.4
4+2.25+5+7 9.63÷2.5÷4
8.37-3.25-(1.37+1.75)
3- - × + ×
× + ÷ 18×( + )
×7+ ×5 ( - )×(24- )( × + )÷ ÷[( + )× ]
×7+ ×5 ( - )×24- )
( )
(32× +17)÷ (25+ )÷ +
× + × + × ÷(21× + ×21)× (99+ )÷9
× × +3÷
÷[( + )× ] ( + )×30
× - ÷ 4- -
×58+ ×41+ ÷[( - )÷ ]
× × - × + ÷
235 - 135÷18 ×153–0.6×53第四部分(151-200题)
(+)÷+ 10 - - +
25×÷× 13.09-8.12-4.88
12×103-4500÷75 ×[÷(×)]
(+)×15×11 37.5+19.5÷2.5×4
1125-997 998+1246
4 +3.2+5 +6.8 25×(37×8)
12 -(1 +2 ) 400÷125÷8( - )×12 1 ×2 ×
34×(2+ ) 125×8.8
4.35+4.25+3.65+3.75 3.4×99+3.4
17.15-8.47-1.53 17 -3 -4
0.125×0.25×32 22.3-2.45-5.3-4.55
( + + )×72 4.25-3 -(2 -1 )
187.7×11-187.7 ÷2 + ×
43 × +57.125× -0.5 ×(-÷)2.42÷ +4.58× -4÷3 ×6.6-2.5×
++ -(-)
4.6--+5.4 2.8++7.2+
-2.25+- ++14
-+ 5--
+-++ 0.75+++0.375
-+-+ 48.3--
×4.25+÷6 +(-1.8)
0.625×0.5++×62.5% ×8
2.5×(+- - ) 22×+25×75%+5×0.75第五部分(201-250题)
3.2×0.25﹣ ÷4 0.4×(3.85﹣0.4)÷13.8
15.8﹣ +14.2﹣ 8×( + )+ ;
÷( + × ) 68÷[0.5×(7.5﹣0.7)
25×1.25×4 (3.75+4.1+2.35)×0.8
1﹣ ﹣ 99×16+16
10÷ + ×18 26.35÷6.2+14.5
31.9×18﹣8×31.9 21÷( + )÷
( + )×45 (1﹣ ×70)÷12×( + ﹣ ) ( ﹣0.125)÷0.5
﹣15.37+ ﹣34.63 24×( + ﹣ )
360÷[56×( ﹣ ) ( ×1.7+ ×1.7)÷
]
80.7×8.7+8.07×13 ×[ ﹣( ﹣ )
]
96×
10.64+4.5×3.6+11.36 7×( + + )× + ÷ 2+ ÷ ×
×( + ÷ ) ÷[( + )×
]
7.32﹣(3.8+1.32) 0.6×24+ ×76
× ÷( ) [7+(3﹣1 ) × +
]
1880×201.1﹣187.9×2011
3.2×1.25×0.25 5.8×[1÷(2.1﹣2.09)
]
×101﹣ 42÷( + )× + ×75% ( ﹣ )×( + )
第六部分(251-300题)
8.85﹣0.25﹣0.75 (51+ )÷17
375+450÷18×25 1.25×0.25×32
14.2×25%+ × ÷(1﹣ ﹣ )
+2 +3.25+3 ( + )×15×17
2
68﹣7.5+32﹣2.5 ﹣( ﹣ )
3175+25﹣112 8.02×99+8.92
× + × + ( + )×7×5
×(0.75﹣ ) + ×(2.5﹣ )
0.45+0.45÷0.9×1.8 9 ﹣5 ﹣2.25
25×104 0.625×4.3+ ×4.7+62.5%
( + )×10×6 ×20﹣ ×3﹣
2005× 999 +99 +9 +
÷[ ﹣( + ) 1.3﹣3.79+9.7﹣6.21
]( × + × )×18.5 ×8+ +4×
2.8×4.1+0.28×59 26.7﹣1.7×5﹣1.5
8× +8× 69×
1200﹣198 ÷ + ×
×(1÷ ﹣ ÷1)+ . 67×
1.9﹣1.9×(1.9﹣1.9) 0.7+3.9+4.3+6.1
12.25﹣0.64﹣0.36+7.75 3﹣ ÷ ﹣
×〔 ﹣( ﹣ )〕 ( + )×7+ .÷( ﹣ )×( ﹣ ) + ﹣ +
6×0.375+0.375×3+0.375 4.67﹣(2.98+0.67)
3÷ ÷ ÷4 76×99
36×( + ﹣ ) ( + ÷ )×
第七部分:(第 301-350 题)
4.05﹣1.8﹣1.2 125×32×25
( + )÷ ﹣ 1.25×32×2.5
+ × 7.38﹣(1.57+2.38)
+ ×99 ÷[1÷( ﹣ )
]9315÷23+77 1.25×32×2.5
7.25﹣3 +3.75﹣6 0.625×12.2﹣ ×3.2+
( × + ÷ )÷ 184×0.25+ ×15+25%
187 ﹣(15﹣12 ) 18 +6.25+7 +3.75
÷8+ × 6.43×83.8÷6.43×6.43÷83.8÷6.43
125×8.08 86×15﹣380
79×25+20×79+79×55 [ ﹣( ﹣ ) ÷4
]
×( ﹣ ) × ÷
7 +3 +2 +6 ÷7+ ×
2.5×0.125×80×4 . 167+289+33+11
48×125×2×8 23×52+52×77 ;89×101 3 ﹣2 +5 ﹣1
14.85﹣1.58×8+31.2÷1.2 2.25× +2.75÷1 +60%
1000+999﹣998﹣997+996+995﹣994﹣993+…+104+103﹣102﹣101,
1.25×0.25×32 0.25×3.78×4
6.74×10.1 0.85×99
6.8×3.7+6.8×6.3 13.6﹣2.8+7.4﹣7.2
98×2.5 ÷23+ ×
3.5÷8÷0.125 . ÷13+ ×
54.2﹣ +4.8﹣ ; 3.5× +5.5×80%+0.8第八部分(351-430题)
12×3434-34×1212 20182018×1998-19981998×2018+ + + + + +
+答案:
第一部分(1-50题)
12.06+5.07+2.94=20.07 30.34+9.76-10.34 =29.76
×3÷ ×3 =9 25×7×4 =700
34÷4÷1.7 = 5 1.25÷ ×0.8 =
102×7.3÷5.1 = 146 17 + -7 =10
1 - - = 11 +7 +3 =22
933-15.7-4.3 =913 41.06-19.72-20.28=1.06
7 -3 + =4 8 +2 - =10
700÷14÷5=10 18.6÷2.5÷0.4=18.6
1.96÷0.5÷4 =0.98 1.06×2.5×4=10.6
13× ÷ =13 29÷ × =29
19.68-(2.68+2.97)=14.03 5.68+(5.39+4.32)=15.39
19.68-(2.97+9.68)=7.03 7 +( - )=7
5 -( - ) =5 0.74÷(71× )=
1.25×( 8 ÷0.5)=20 0.25×( 4 × 1.2)=1.2
1.25×( 213×0.8)=213 9.3÷(4÷ )=40
24×( - - + )=17 (12+ ) ×7=86
0.92×1.41+0.92×8.59=9.2 × - × =
1.3×11.6-1.6×1.3=13 ×11.6+18.4× =54
9999+999+99+9=11106 4821-998=38233.2×12.5×25=1000 1.25×88=110
7.6÷0.25=30.4 3.5÷0.125=28
1.8×99+1.8 =180 3.8×9.9+0.38 =38
×103- ×2- =28 1.01×9.6=90696
102×0.87=88.74 2.6×9.9=25.74
×31+ =7 × + ÷
第二部分(51-100题)
×36= ×(37-1)=32 ×38= ×(37+1)=33
13.5×27+13.5×72+13.5=1350 1.5×7.4+0.6×150%+2÷ =
5.3× +2.7×25% =2.5 0.67×10.1-6.7=0.067
28×21.6-2.8×16=560 5.6×1.7+0.56×83=56
×6.6+2.5×=33 --=3
4.6+++5.4 =20 ×(-÷)=
2.8++7.2+=19 +2.25++=20
++=1 -+=53
+-++=5 0.75+++0.375=2
++++=1- +10- +100- +1000- +10000- = 11110
-(+)=1
5--=1 48.3--=28.3
×4.25+÷6 =42.5 3.6×0.25 =0.9
0.625×0.5++×62.5% =1.25 ×÷=
2.5×(+++)=9 22×+25×75%-7×0.75=30
0.25×63.5-×=12.5 ×2.5-×=5
+3.125++=10 +(-1.8)=17
(111+999) ÷[56×(-)]=370 49.5×-(50-)×0.6 =495
×+÷+=7 45×(+-0.6)=20
897×-37.5%+104×0.375=875 ×(-5.375) =0
3.5×+1.25×+3.8÷=12.5 71×99=7029
3755+2996=6751 8439+1001=9440
446+295=741 888+999=1887
299×101=30199 563×999=562437
2100÷20 =105 1125-996=129
6÷0.25=6×4=24 72×156-56×72=7200
第三部分(101-150题)
25×32×125=25×4×8×125=100000 709×99+709=70900
0.25×48=0.25×4×12=12 2.5×-0.4÷2=0.92×6.6+2.5×6 =33 75.3×99+75.3=7530
4.6×3.7+54×0.37 =37 0.125×+×8.25+12.5%=1.25
11―6―1 =3 15―4.25―5= 5
19.82―6.57―3.43 =9.82 4.6+3+6+5.4=20
4+2.25+5+7=20 9.63÷2.5÷4=9.63÷(2.5×4)=0.963
8.37-3.25-(1.37+1.75)=2
=
3- - × + ×
=2 =
× + ÷ 18×( + )=23
=
×7+ ×5 =8 ( - )×(24- )=1
( × + )÷ ÷[( + )× ]=1
=
( ) =
=
(32× +17)÷ =60 (25+ )÷ +
=103
× + × + × ÷
= =
=20
=0
(21× + ×21)× = (99+ )÷9 =11
× = +3÷
× =6
÷[( + )× ] = ( + )×30 =49
× - ÷ = 4- - =2
×58+ ×41+ ÷[( - )÷ ]=4
=12.5× × - = × + ÷
=
235 - 135÷18 =227.5 ×153 – 0.6×53=60
第四部分(151-200题)
(+)÷+= 10 - - + =9
25×÷×=1 13.09-8.12-4.88=0.09
12×103-4500÷75 =96 ×[÷(×)]
(+)×15×11=×15×11+ ×15×11 =67
37.5+19.5÷2.5×4= =68.7
1125-997 =128 998+1246 =2224
4 +3.2+5 +6.8=20 25×(37×8)=7400
12 -(1 +2 )=8 400÷125÷8=0.4
( - )×12 =1 1 ×2 × =
34×(2+ )=81 125×8.8 =12.5×(8+0.8)=1100
4.35+4.25+3.65+3.75=16 3.4×99+3.4=340
17.15-8.47-1.53 =7.15 17 -3 -4 =9
0.125×0.25×32=1 22.3-2.45-5.3-4.55=10
( + + )×72=109 4.25-3 -(2 -1 )=0
187.7×11-187.7=1877 ÷2 + × =
43 × +57.125× -0.5=50 ×(-÷)=
2.42÷ +4.58× -4÷3=8 ×6.6-2.5×=0
++=19 -(-)=2
4.6--+5.4=0 2.8++7.2+=19
-2.25+-=0 ++14 =14
-+=53 5--=1
+-++=5 0.75+++0.375=2-+-+= 9090 48.3--=28.3
×4.25+÷6= 42.5 +(-1.8)=17
0.625×0.5++×62.5% =1.25 ×8= (31+ )×8=251
2.5×(+--)=0 22×+25×75%+5×0.75=39
第五部分(201-250题)
3.2×0.25﹣ ÷4= 0.4×(3.85﹣0.4)÷13.8=0.1;
15.8﹣ +14.2﹣ 8×( + )+ =4;
=29
÷( + × )= ; 68÷[0.5×(7.5﹣0.7) =20.
25×1.25×4 =125 (3.75+4.1+2.35)×0.8= ] 8.08
1﹣ ﹣ =0 99×16+16=1600
10÷ + ×18=30 26.35÷6.2+14.5=18.75
31.9×18﹣8×31.9=319; 21÷( + )÷ =35;
( + )×45=36; (1﹣ ×70)÷ = ;
12×( + ﹣ )=1; ( ﹣0.125)÷0.5=0.5.
﹣15.37+ ﹣34.63=50; 24×( + ﹣ )=11;
360÷[56×( ﹣ ) =120; ( ×1.7+ ×1.7)÷ = ;
]
80.7×8.7+8.07×13=807; ×[ ﹣( ﹣ ) = .
]
96× = ; = ;
= ; = ;
=8; =6.
10.64+4.5×3.6+11.36=38.2; 7×( + + )= ;
× + ÷ = ; 2+ ÷ × = ;×( + ÷ )= ; ÷[( + )× = .
]
7.32﹣(3.8+1.32)=2.2; 0.6×24+ ×76=60;
× ÷( )= ; [7+(3﹣1 ) × + =7
]
1880×201.1﹣187.9×2011=201.1 =25;
= ; =648.
3.2×1.25×0.25=1; 5.8×[1÷(2.1﹣2.09) =580;
×101﹣ =62; 42÷( + )=36;]
× + ×75%=0.75; ( ﹣ )×( + )= .
第六部分(251-300题)
8.85﹣0.25﹣0.75=7.85; (51+ )÷17=3 ;
375+450÷18×25=1000; 1.25×0.25×32=10;
14.2×25%+ × =3.75; ÷(1﹣ ﹣ )=1.
+2 +3.25+3 =10; ( + )×15×17=47;
68﹣7.5+32﹣2.5=90; ﹣( ﹣ )= .
175+25﹣112=88; 8.02×99+8.92=802.9;
× + × + =1; ( + )×7×5=17;
×(0.75﹣ )= ; + ×(2.5﹣ )= .
0.45+0.45÷0.9×1.8=1.35; 9 ﹣5 ﹣2.25=1 ;
25×104=2600; 0.625×4.3+ ×4.7+62.5%=6.25;
( + )×10×6=16; ×20﹣ ×3﹣ =6.
2005× =(2004+1)× =2004× + =2003+ =2003 ;999 +99 +9 + =999 +99 +9 =(999 )+(99 )+(9 )=1000+100+10=1110;
÷[ ﹣( + ) = ; 1.3﹣3.79+9.7﹣6.21=1.
]
( × + × )×18.5=16 ; ×8+ +4× =7;
2.8×4.1+0.28×59=28; 26.7﹣1.7×5﹣1.5=16.7.
8× +8× =8; 69× =15;
1200﹣198=1002; ÷ + × = ;
×(1÷ ﹣ ÷1)+ = . 67× =(66+1)× =24;
1.9﹣1.9×(1.9﹣1.9)=1.9 0.7+3.9+4.3+6.1=15;
12.25﹣0.64﹣0.36+7.75=19 3﹣ ÷ ﹣ =2;
×〔 ﹣( ﹣ )〕= ; ( + )×7+ =5.
÷( ﹣ )×( ﹣ )= ; + ﹣ + =1 ;
6×0.375+0.375×3+0.375=3.75; 4.67﹣(2.98+0.67)=1.02;
3÷ ÷ ÷4=3. 76×99=7524;
36×( + ﹣ )=11; ( + ÷ )× = ;
第七部分(301-350题)
4.05﹣1.8﹣1.2=1.05; 125×32×25=100000;
( + )÷ ﹣ =0. 1.25×32×2.5=100,
+ × = ; 7.38﹣(1.57+2.38)=3.43;
+ ×99=90; ÷[1÷( ﹣ ) = ;
9315÷23+77=482. 1.25×32×2.5=100;]
7.25﹣3 +3.75﹣6 =1; 0.625×12.2﹣ ×3.2+ =6.25.
( × + ÷ )÷ = ; 184×0.25+ ×15+25%=50;187 ﹣(15﹣12 )=185; 18 +6.25+7 +3.75=36;
÷8+ × = ; 6.43×83.8÷6.43×6.43÷83.8÷6.43=1.
125×8.08=1010, 86×15﹣380=910,
79×25+20×79+79×55=7900, [ ﹣( ﹣ ) ÷4= .
]
×( ﹣ )= , × ÷ = ,
7 +3 +2 +6 ,=20; ÷7+ × = ;
2.5×0.125×80×4=100. 167+289+33+11=500;
48×125×2×8=96000; 23×52+52×77=5200;
89×101=8989. 3 ﹣2 +5 ﹣1 =5;
14.85﹣1.58×8+31.2÷1.2=28.21; 2.25× +2.75÷1 +60%=3.6;
1000+999﹣998﹣997+996+995﹣994﹣993+…+104+103﹣102﹣101,
=(1000+999﹣998﹣997)+(996+995﹣994﹣993)+…+(104+103﹣102﹣101),
=4+4+…+4,
=4×(900÷4),
=900.
1.25×0.25×32=10; 0.25×3.78×4=3.78;
6.74×10.1=68.074; 0.85×99=84.15;
6.8×3.7+6.8×6.3=68. 13.6﹣2.8+7.4﹣7.2=11;
98×2.5=245; ÷23+ × =
3.5÷8÷0.125=3.5. ÷13+ × = ;
54.2﹣ +4.8﹣ =57; 3.5× +5.5×80%+0.8=8;
第八部分(351-430题)
12×3434-34×1212 =12×34×101-34×12×101=0
20182018×1998-19981998×2018 =2018×1001×1998-1998×1001×2008=0
= 1÷(123 ÷123)=1÷【(123+ )÷123】=
=1÷【(1573+ )÷1573】+ =1
=159× -(104+1)× ==169× +(2003+1)× = =2145
= ×( - + - +……+ - )=
= - + - + +…+ - =
=1-( + )+( + )-( + )+( + )-( + )+( + )-( + )+
( + )=1- + =
=( + )×( )+( + )× -( + )×( )
=( + )× =
=( )×1+( )×( )-1×( )-( )×( )
=
=(1- …- )×( + +…+ )+(1- …- )× -(1- …- )×( +
+…+ )+ ×( + +…+ )
=(1- …- )× + ×( + +…+ )
= 1× -( + +…+ )× + ×( + +…+ )=
= 110
=7.6 ×2011.4+2011.4×2.4+12.5×2.4=20145.25
=999×999+999+1000=999000+1000=1000000
==2×33×3×222+2×3333×3×22222
=444×999+44444×9999=444×(1000-1)+44444×(10000-1)=444000-444+444440000-44444
=444884000-44888=444439512
= 8×1111+9×8×1111=8×1111×(1+9)=88880= + =1+ =
= =(100- )×49=4899
= 16 =16
=10 =100
= 20196477
= × + × =
= 625 =0.75
=39× +86× +24× =148
=(50+ )× +(70+ )× +(90+ )× =123
=1÷【(2011+ )÷2011 】=
= 5392
=7.5
=0.5
=62.5-(2.1-1.2)=61.6
=94×100.35+6 ×100.35=10035
=7.15×2.5×18-7.15×2.5×0.5×28
=7.15×2.5×(18-14)=71.5
= 12
=2014 =24× =8
= = +1=1
=1.56×9.2+9.2×0.44=18.4
=
= ×(79 +10+ )= 50
=76× -76× +23× +23× -53× +53× =
×(76-53)- ×(76-23)+ ×(23+53)=1= 20× +20× =40
= ×( + )- × × = - =
=100
=( + )÷ =
= 33.3
= =
= + …+ - =
= 1- +1- +1- +1- +…+1- =109-( + + +…+ )
=109-( + - + - +…+ - )=109- =108
= ×(1- + - + - +…+ - )=
=0
=2008×98.25-225×10.04+200.8×28.75=2008×98.25- ×2008
+2008×2.875=200800
= ÷( )=1÷0.8=1.25
= 1×( + +…+ )+( + +…+ )×( + +…+ )-1×( + +…+ )-( + +…+ )×
( + +…+ )=
=2.5 = =
=59 =
= =4019
=1 =2007
=9 =100= ( + + )×7×8×9=24
=(46+43+41+…+1)- × ×16=375
=( + + )×( + )+( + + )× -( + + )×( + )- ×( + )=
= (1- + - + - +…+ - )=
=(1+3+5…+17)+( + +…+ )
=81
=10120.36 + + + + +
+ + = + + + + +( )+( )+( )+( )=5
= + - + - + - +…+ =
=(2009+2008)×(2009-2008)=4017
=3333×6666+3333×3334=33330000
=(500+2)(500-2)=500²-2²=249996
=(900+1)(900-1)=900²-1²=809999
=(2000+1)(2000-1)=2000²-1²=3999999
= (2011+2009)(2011-2009)=4020×2=8040
=(1250+750)(1250-750)=2000×500=1000000