小升初——四则混合运算(带答案)精编版
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420÷ 216÷ 18× 17 25× 12.5× 32
× +÷
40 ÷ [ ×( + ) ] 17.( 2011?游仙区) 用自己喜欢的 方法算 18.( 315+285)÷( 315﹣ 255) 5﹣( ÷ + )
( + ﹣ )× 36
22.( 2011?田东县)计算下列各 题. 23. 860﹣ 560÷ 8× 7 ( 5.9+1.65)÷ 2.5
④1÷ ﹣ ÷1
⑤ ×5÷ ×5
⑥2﹣ ÷
⑦ 36×( + ) 7.( 2012?天柱县)脱式计算. 3060 ÷15﹣ 25×1.04
×÷+
( + )×( ÷ 5)
× [ ﹣( ﹣ ) ] . 8.( 2012?桃源县)脱式计算. 99× 87+87 18.7 ﹣3.375 ﹣ 6.625 5 ×( +0.5 )÷ 2
3.( 2012?武胜县)计算,能简算 的要简算.
2004+75 ×54÷ 45 ( 0.125 × 8﹣ 0.5 )× 4 32%× 76.4+1.36× 3.2
× +÷
( ﹣ )×( + )
1110÷ [56 ×( ﹣ ) ]
4.( 2012?武胜县)计算. ( 108÷ 25)×( 75÷ 18) 3.5 ×( 20.6 ﹣ 16.8 ÷ 4.8 ) ( ﹣ )×( + )
×+ ×
17.31﹣ 6.15﹣ 3.85 ÷ [ ×( ﹣ ) ] .
21.( 2011?武昌区)递等式计算: 360﹣ 225÷15× 18
÷×
4.72﹣ 1.16﹣ 2.84 +÷ +.
( 5)
( 6) 38÷ [2.5 ×( 4.36+3.64 ) ] . 24.( 2011 ?淮南)选择合适的方
小升初真题混合运算专项练习(有答案)
1.( 2012?瑶海区)基本计算: ① 428÷ [32 ÷( 4+4) ] ② 127× 8÷ 127× 8
2.( 2012?武胜县)计算. 9080﹣ 35×26 17÷ 3.4+1.48
÷( ﹣ )×( + )
3÷ ÷ ÷4
( + )÷ +
10÷ [ ﹣( ÷ + ) ] .
× [7 ﹣4÷( + ) ] .
5.( 2012?万州区)计算: 9﹣ 5.4= 780÷ 26= 3.14 × 3= 27× =
625﹣ 199= 10+0.1= 0÷ =
9.42 × 0.1=
﹣=
2
0.4 = 1÷ =
1﹣ + = 6.( 2012?桐庐县)计算. ① 92×13+28 ② 4.2 ÷ 1.5 ﹣ 0.36 ③ 78×
( 2) 6÷ 2.4﹣ 0.3× 1.4
( 3) × 6+6×
( 4)( ﹣ 0.4 )÷ × . 15.( 2012?凤阳县)用递等式计
算,能简算的要简算 ( 1) 43× 8﹣ 420÷ 15 ( 2) +2 + +3
( 3) × ÷ 15
( 4)( + )÷ ﹣ ( 5) 3.9 ×9.77+0.23 × 3.9 ( 6) +( ﹣ )× . 16.( 2011 ?漳州)计算下面各题, 怎样简便就怎样计算.
=3﹣ ,
=2 ;
小升初真题混3合运算 ----
④ 1÷ ﹣ ÷ 1
=4﹣ ,
=3 ;
⑤ × 5÷ × 5
=
× 5× 5,
=1× 5× 5, =25;
⑥ 2﹣ ÷
=2﹣ ,
=;
⑦ 36×( + )
=36× +36× ,
=6+24, =30. 7.( 1) 3060÷ 15﹣ 25× 1.04 =204﹣ 26, =178;
=( 0.2+10.8 )÷ 22, =11÷ 22, =0.5 ; ( 3) × + × ,
=( + )× ,
=1× ,
=;
( 4) × ÷( ﹣ ),
=× ÷ ,
= × × 12,
= × 12× ,
=3× ,
=.
12.( 1) 800﹣ 608÷32× 5, =800﹣ 19×5, =800﹣ 95, =705; ( 2) 3.68 ﹣ 3.6 × 0.2+0.18 , =3.68 ﹣ 0.72+0.18 , =2.96+0.18 , =3.14 ; ( 3) 48× 9.9+48 × 0.1 , =48×( 9.9+0.1 ), =48× 10, =480; ( 4)( 1﹣ )÷ 0.25 × 4,
〔 1﹣( + )〕÷ .
29.( 2010?自流井区)计算,能简 便的要简便 ( 73.6 ÷ 0.16+370 )× 18 3.84 ÷ +5.16 ×
3.3 × +0.75 ×3.7+75%× 3.
19.( 2011?永州) 下面各题, 怎样 简便就怎样计算. 20. 405×( 20﹣ 172÷ 43)
( 4)( + ﹣ )÷ .
24.( 2011?南县) 下面各题, 能简 算的要简算.(能简算的要写出主要 简算过程) 25. 109× x+109 × x
9.5﹣( 4.6+5.8 )÷ 1.3
23.( 2011 ?金堂县)用自己喜欢 的方式计算下面各题(要写出主要 的解答过程) ( 1) 3600﹣ 800÷ 40× 35 ( 2) 64﹣ 15.8 ﹣ 14.2 ( 3)
(4) × + ÷ ,
= ×( × ),
= +,
=× ,
=;
=;
( 5)( ﹣ )×( + ),
( 4) 3÷ ÷ ÷ 4,
=× ,
=9× ÷ 4, =12÷ 4, =3; ( 5)( + )÷ + , =× , = +, =; ( 6) 10÷ [ ﹣( ÷ + )] , =10÷ [ ﹣( + ) ] , =10÷ [ ﹣ ] ,
法计算(要写出主要的计算过程) . 6760 ÷ 13+17× 21 3.33 × 4.5+4.5 × 6.67
.
25.( 2011?河西区) 脱式计算.( 能 简算的要简算) 53× 13+21 1.65 ×45+55× 1.65
÷ [1 ﹣( + ) ] .
.
30.(2010?雨花区)计算下列各 题,能简便的要简便计算 3618÷45+1620 67﹣ 67×( 23+19) 200.8 ×73﹣ 6.3 × 2008 118÷( 14+2.5 ×45) 99﹣ 97+95﹣ 93+91﹣ 89+…+7﹣ 5+3 ﹣1 2008÷200820082009 . 31.( 2012?咸安区)灵活计算
=5 × ÷ 2 ,
=6 ÷ 2 ,
=3; ( 4) ÷ [ ( ﹣ )÷ ] ,
= ÷[ ÷ ] ,
= ÷,
=. 9.① 630÷ 18×24, =35× 24, =840 ; ② 0.7+3.9+4.3+6.1 , =( 0.7+4.3 ) +( 6.1+3.9 ), =5+10, =15; ③ 16× +4× ,
( 6﹣ 6× )÷ 12.
( 2012?吉水县)脱式计算,能简 算的要简算.
97÷1+35.6+0 ×6
1375+450 ÷ 15× 25 [4.5+ ( 13× +13× ) ] ÷
48× +48× +48×8
94.47﹣( 94.47﹣86.555) 3.42×76.3+76.3 ×5.76+9.18 × 23.7. 12.( 2012 ?洪山区) 能简便的要用 简便方法计算,写出主要过程 13.( 1) 360+240÷ 15× 28
÷ [ ( ﹣ )÷ ] . 9.( 2012?苏州)计算下面各题, 能简算的要简算. 10.① 630÷ 18× 24 ② 0.7+3.9+4.3+6.1 ③ 16× +4× ④( 7.5﹣ 7.5× 0.6)÷ 4 ⑤( + ÷ 3)×
小升初真题混1合运算 ----
⑥.
10.( 2012?顺昌县) 脱式计算.( 能 简算的要简算) ① 14×75﹣ 624÷39 ② ÷ 9+ ×
=;
( 6) 1110÷ [56 ×( ﹣ ) ] ,
=1110÷ [56 × ﹣ 56× ] ,
=1110÷ [24 ﹣ 21] , =1110÷ 3, =370
4.( 1)( 108÷ 25)×( 75÷ 18), = ×,
=18; ( 2) 3.5 ×( 20.6 ﹣ 16.8 ÷ 4.8 ), =3.5 ×( 20.6 ﹣3.5 ), =3.5 ×17.1 , =59.85 ;
=( 16+4)× ,
=20× , =8; ④( 7.5 ﹣ 7.5 ×0.6 )÷ 4, =( 7.5 ﹣ 4.5 )÷ 4, =3÷ 4, =0.75 ; ⑤( + ÷ 3)× ,
=( + × )× ,
=( + )× ,
小升初真题混4合运算 ----
=
,
=;
⑥
[
(
)] ,
= × [ ÷(
)] ,
( 4)
(
)× 13+4÷ 17.
27.(2011?海州区)神机妙算: 2842 ÷ 14+74×3
÷( ﹣ )
3.6 × 99+3.6 ÷( × )
× +÷
72×( ﹣ )
28.( 2011?丰都县)脱式计算 ( 384+336)÷ 15× 13 ( 11+30.6)÷ 16+16.5 2﹣ × ﹣
= ×[
],
=
[
],
=
,
=1 10.① 14× 75﹣624÷ 39 =1050﹣16, =1034;
② ÷ 9+ ×
=× + × ,
=( + )× ,
=× ,
=;
③ +( ﹣ )÷
=+ × ,
=+ ,
=;
④ ÷ [ ﹣( 1﹣ ) ] .
= ÷[ ﹣ ] ,
=
Leabharlann Baidu
,
=.
11.( 1) 1379+450÷ 18×40, =1379+25× 40, =1379+1000, =2379; ( 2)(3.2 ÷ 16+10.8 )÷ 22,
( 3)( ﹣ )×( + ),
=× ,
=;
( 4) × [7 ﹣ 4÷( + ) ] ,
= × [7 ﹣ 4÷ ] ,
= × [7 ﹣ 4× ] ,
= × [7 ﹣ 5] ,
= ×2,
=.
5. 9﹣5.4=3.6 , 780 ÷26=30, 3.14 × 3=9.42 , 27 × =15,
625 ﹣199=426 , 10+0.1=10.1 ,
( 3) ÷( ﹣ )×( + ),
=÷ × ,
=10÷ ,
=81 3.( 1) 2004+75× 54÷ 45, =2004+4050÷ 45, =2004+90, =2094; ( 2)(0.125 × 8﹣ 0.5 )× 4, =( 1﹣0.5 )× 4, =0.5 ×4, =2; ( 3) 32%× 76.4+1.36 × 3.2 , =32%×76.4+13.6 × 0.32 =0.32 ×( 76.4+13.6 ), =0.32 × 90, =28.8 ;
③ +( ﹣ )÷
④ ÷ [ ﹣( 1﹣ ) ] .
11.( 2012?泉州)用递等式计算 ( 1) 1379+450÷18× 40 ( 2)(3.2 ÷ 16+10.8 )÷ 22 (3) × + ×
( 4) × ÷( ﹣ )
( 2012?硚口区)脱式计算. (友 情提醒:有的可以简算)
800﹣608÷ 32×5 3.68﹣3.6× 0.2+0.18 48× 9.9+48 × 0.1 ( 1﹣ )÷ 0.25 × 4
( 2) × ÷ +
=× +,
=+,
=;
( 3)( + )×( ÷ 5)
= × ×,
=;
( 4) × [ ﹣( ﹣ ) ] .
= ×[ + ﹣ ] ,
=× ,
=.
8.( 1) 99× 87+87, =( 99+1)× 87, =100 × 87, =8700; ( 2) 18.7 ﹣ 3.375 ﹣ 6.625 , =18.7 ﹣( 3.375+6.625 ), =18.7 ﹣ 10, =8.7 ; ( 3) 5 ×( +0.5 )÷ 2 ,
( + )× 20÷
26.( 2011?河池)用你喜欢的方法 计算. 25× 12﹣ 850÷ 17 0.25 ×99+25%
6÷ 7﹣
÷ [ ( + )× ] .
( 2011?瑞安市) ( 1) 360+24÷ 15× 30 ( 2) 0.25 × 7.2+2.8 ÷ 0.5 ( 3) × 29﹣ 8×
0÷ =0, 9.42
×
0.1=0.942 , ﹣ = , 0.4
2=0.16 ,
1÷ = , 1 ﹣ + = ;
6.① 92× 13+28 =1196+28, =1224; ② 4.2 ÷1.5 ﹣ 0.36 =2.8 ﹣0.36 , =2.44 ;
③ 78×
=( 79﹣1)× ,
=79× ﹣ 1× ,
①
②
小升初真题混2合运算 ----
③
④
.
参考答案:
1.① 428÷[32 ÷( 4+4) ] , =428÷ [32 ÷ 8] , =428÷ 4, =107; ② 127× 8÷127× 8, =127÷ 127× 8× 8, =8× 8, =64 2.( 1) 9080﹣ 35× 26, =9080﹣ 910, =8170; ( 2) 17÷ 3.4+1.48 , =5+1.48 , =6.48 ;
× +÷
40 ÷ [ ×( + ) ] 17.( 2011?游仙区) 用自己喜欢的 方法算 18.( 315+285)÷( 315﹣ 255) 5﹣( ÷ + )
( + ﹣ )× 36
22.( 2011?田东县)计算下列各 题. 23. 860﹣ 560÷ 8× 7 ( 5.9+1.65)÷ 2.5
④1÷ ﹣ ÷1
⑤ ×5÷ ×5
⑥2﹣ ÷
⑦ 36×( + ) 7.( 2012?天柱县)脱式计算. 3060 ÷15﹣ 25×1.04
×÷+
( + )×( ÷ 5)
× [ ﹣( ﹣ ) ] . 8.( 2012?桃源县)脱式计算. 99× 87+87 18.7 ﹣3.375 ﹣ 6.625 5 ×( +0.5 )÷ 2
3.( 2012?武胜县)计算,能简算 的要简算.
2004+75 ×54÷ 45 ( 0.125 × 8﹣ 0.5 )× 4 32%× 76.4+1.36× 3.2
× +÷
( ﹣ )×( + )
1110÷ [56 ×( ﹣ ) ]
4.( 2012?武胜县)计算. ( 108÷ 25)×( 75÷ 18) 3.5 ×( 20.6 ﹣ 16.8 ÷ 4.8 ) ( ﹣ )×( + )
×+ ×
17.31﹣ 6.15﹣ 3.85 ÷ [ ×( ﹣ ) ] .
21.( 2011?武昌区)递等式计算: 360﹣ 225÷15× 18
÷×
4.72﹣ 1.16﹣ 2.84 +÷ +.
( 5)
( 6) 38÷ [2.5 ×( 4.36+3.64 ) ] . 24.( 2011 ?淮南)选择合适的方
小升初真题混合运算专项练习(有答案)
1.( 2012?瑶海区)基本计算: ① 428÷ [32 ÷( 4+4) ] ② 127× 8÷ 127× 8
2.( 2012?武胜县)计算. 9080﹣ 35×26 17÷ 3.4+1.48
÷( ﹣ )×( + )
3÷ ÷ ÷4
( + )÷ +
10÷ [ ﹣( ÷ + ) ] .
× [7 ﹣4÷( + ) ] .
5.( 2012?万州区)计算: 9﹣ 5.4= 780÷ 26= 3.14 × 3= 27× =
625﹣ 199= 10+0.1= 0÷ =
9.42 × 0.1=
﹣=
2
0.4 = 1÷ =
1﹣ + = 6.( 2012?桐庐县)计算. ① 92×13+28 ② 4.2 ÷ 1.5 ﹣ 0.36 ③ 78×
( 2) 6÷ 2.4﹣ 0.3× 1.4
( 3) × 6+6×
( 4)( ﹣ 0.4 )÷ × . 15.( 2012?凤阳县)用递等式计
算,能简算的要简算 ( 1) 43× 8﹣ 420÷ 15 ( 2) +2 + +3
( 3) × ÷ 15
( 4)( + )÷ ﹣ ( 5) 3.9 ×9.77+0.23 × 3.9 ( 6) +( ﹣ )× . 16.( 2011 ?漳州)计算下面各题, 怎样简便就怎样计算.
=3﹣ ,
=2 ;
小升初真题混3合运算 ----
④ 1÷ ﹣ ÷ 1
=4﹣ ,
=3 ;
⑤ × 5÷ × 5
=
× 5× 5,
=1× 5× 5, =25;
⑥ 2﹣ ÷
=2﹣ ,
=;
⑦ 36×( + )
=36× +36× ,
=6+24, =30. 7.( 1) 3060÷ 15﹣ 25× 1.04 =204﹣ 26, =178;
=( 0.2+10.8 )÷ 22, =11÷ 22, =0.5 ; ( 3) × + × ,
=( + )× ,
=1× ,
=;
( 4) × ÷( ﹣ ),
=× ÷ ,
= × × 12,
= × 12× ,
=3× ,
=.
12.( 1) 800﹣ 608÷32× 5, =800﹣ 19×5, =800﹣ 95, =705; ( 2) 3.68 ﹣ 3.6 × 0.2+0.18 , =3.68 ﹣ 0.72+0.18 , =2.96+0.18 , =3.14 ; ( 3) 48× 9.9+48 × 0.1 , =48×( 9.9+0.1 ), =48× 10, =480; ( 4)( 1﹣ )÷ 0.25 × 4,
〔 1﹣( + )〕÷ .
29.( 2010?自流井区)计算,能简 便的要简便 ( 73.6 ÷ 0.16+370 )× 18 3.84 ÷ +5.16 ×
3.3 × +0.75 ×3.7+75%× 3.
19.( 2011?永州) 下面各题, 怎样 简便就怎样计算. 20. 405×( 20﹣ 172÷ 43)
( 4)( + ﹣ )÷ .
24.( 2011?南县) 下面各题, 能简 算的要简算.(能简算的要写出主要 简算过程) 25. 109× x+109 × x
9.5﹣( 4.6+5.8 )÷ 1.3
23.( 2011 ?金堂县)用自己喜欢 的方式计算下面各题(要写出主要 的解答过程) ( 1) 3600﹣ 800÷ 40× 35 ( 2) 64﹣ 15.8 ﹣ 14.2 ( 3)
(4) × + ÷ ,
= ×( × ),
= +,
=× ,
=;
=;
( 5)( ﹣ )×( + ),
( 4) 3÷ ÷ ÷ 4,
=× ,
=9× ÷ 4, =12÷ 4, =3; ( 5)( + )÷ + , =× , = +, =; ( 6) 10÷ [ ﹣( ÷ + )] , =10÷ [ ﹣( + ) ] , =10÷ [ ﹣ ] ,
法计算(要写出主要的计算过程) . 6760 ÷ 13+17× 21 3.33 × 4.5+4.5 × 6.67
.
25.( 2011?河西区) 脱式计算.( 能 简算的要简算) 53× 13+21 1.65 ×45+55× 1.65
÷ [1 ﹣( + ) ] .
.
30.(2010?雨花区)计算下列各 题,能简便的要简便计算 3618÷45+1620 67﹣ 67×( 23+19) 200.8 ×73﹣ 6.3 × 2008 118÷( 14+2.5 ×45) 99﹣ 97+95﹣ 93+91﹣ 89+…+7﹣ 5+3 ﹣1 2008÷200820082009 . 31.( 2012?咸安区)灵活计算
=5 × ÷ 2 ,
=6 ÷ 2 ,
=3; ( 4) ÷ [ ( ﹣ )÷ ] ,
= ÷[ ÷ ] ,
= ÷,
=. 9.① 630÷ 18×24, =35× 24, =840 ; ② 0.7+3.9+4.3+6.1 , =( 0.7+4.3 ) +( 6.1+3.9 ), =5+10, =15; ③ 16× +4× ,
( 6﹣ 6× )÷ 12.
( 2012?吉水县)脱式计算,能简 算的要简算.
97÷1+35.6+0 ×6
1375+450 ÷ 15× 25 [4.5+ ( 13× +13× ) ] ÷
48× +48× +48×8
94.47﹣( 94.47﹣86.555) 3.42×76.3+76.3 ×5.76+9.18 × 23.7. 12.( 2012 ?洪山区) 能简便的要用 简便方法计算,写出主要过程 13.( 1) 360+240÷ 15× 28
÷ [ ( ﹣ )÷ ] . 9.( 2012?苏州)计算下面各题, 能简算的要简算. 10.① 630÷ 18× 24 ② 0.7+3.9+4.3+6.1 ③ 16× +4× ④( 7.5﹣ 7.5× 0.6)÷ 4 ⑤( + ÷ 3)×
小升初真题混1合运算 ----
⑥.
10.( 2012?顺昌县) 脱式计算.( 能 简算的要简算) ① 14×75﹣ 624÷39 ② ÷ 9+ ×
=;
( 6) 1110÷ [56 ×( ﹣ ) ] ,
=1110÷ [56 × ﹣ 56× ] ,
=1110÷ [24 ﹣ 21] , =1110÷ 3, =370
4.( 1)( 108÷ 25)×( 75÷ 18), = ×,
=18; ( 2) 3.5 ×( 20.6 ﹣ 16.8 ÷ 4.8 ), =3.5 ×( 20.6 ﹣3.5 ), =3.5 ×17.1 , =59.85 ;
=( 16+4)× ,
=20× , =8; ④( 7.5 ﹣ 7.5 ×0.6 )÷ 4, =( 7.5 ﹣ 4.5 )÷ 4, =3÷ 4, =0.75 ; ⑤( + ÷ 3)× ,
=( + × )× ,
=( + )× ,
小升初真题混4合运算 ----
=
,
=;
⑥
[
(
)] ,
= × [ ÷(
)] ,
( 4)
(
)× 13+4÷ 17.
27.(2011?海州区)神机妙算: 2842 ÷ 14+74×3
÷( ﹣ )
3.6 × 99+3.6 ÷( × )
× +÷
72×( ﹣ )
28.( 2011?丰都县)脱式计算 ( 384+336)÷ 15× 13 ( 11+30.6)÷ 16+16.5 2﹣ × ﹣
= ×[
],
=
[
],
=
,
=1 10.① 14× 75﹣624÷ 39 =1050﹣16, =1034;
② ÷ 9+ ×
=× + × ,
=( + )× ,
=× ,
=;
③ +( ﹣ )÷
=+ × ,
=+ ,
=;
④ ÷ [ ﹣( 1﹣ ) ] .
= ÷[ ﹣ ] ,
=
Leabharlann Baidu
,
=.
11.( 1) 1379+450÷ 18×40, =1379+25× 40, =1379+1000, =2379; ( 2)(3.2 ÷ 16+10.8 )÷ 22,
( 3)( ﹣ )×( + ),
=× ,
=;
( 4) × [7 ﹣ 4÷( + ) ] ,
= × [7 ﹣ 4÷ ] ,
= × [7 ﹣ 4× ] ,
= × [7 ﹣ 5] ,
= ×2,
=.
5. 9﹣5.4=3.6 , 780 ÷26=30, 3.14 × 3=9.42 , 27 × =15,
625 ﹣199=426 , 10+0.1=10.1 ,
( 3) ÷( ﹣ )×( + ),
=÷ × ,
=10÷ ,
=81 3.( 1) 2004+75× 54÷ 45, =2004+4050÷ 45, =2004+90, =2094; ( 2)(0.125 × 8﹣ 0.5 )× 4, =( 1﹣0.5 )× 4, =0.5 ×4, =2; ( 3) 32%× 76.4+1.36 × 3.2 , =32%×76.4+13.6 × 0.32 =0.32 ×( 76.4+13.6 ), =0.32 × 90, =28.8 ;
③ +( ﹣ )÷
④ ÷ [ ﹣( 1﹣ ) ] .
11.( 2012?泉州)用递等式计算 ( 1) 1379+450÷18× 40 ( 2)(3.2 ÷ 16+10.8 )÷ 22 (3) × + ×
( 4) × ÷( ﹣ )
( 2012?硚口区)脱式计算. (友 情提醒:有的可以简算)
800﹣608÷ 32×5 3.68﹣3.6× 0.2+0.18 48× 9.9+48 × 0.1 ( 1﹣ )÷ 0.25 × 4
( 2) × ÷ +
=× +,
=+,
=;
( 3)( + )×( ÷ 5)
= × ×,
=;
( 4) × [ ﹣( ﹣ ) ] .
= ×[ + ﹣ ] ,
=× ,
=.
8.( 1) 99× 87+87, =( 99+1)× 87, =100 × 87, =8700; ( 2) 18.7 ﹣ 3.375 ﹣ 6.625 , =18.7 ﹣( 3.375+6.625 ), =18.7 ﹣ 10, =8.7 ; ( 3) 5 ×( +0.5 )÷ 2 ,
( + )× 20÷
26.( 2011?河池)用你喜欢的方法 计算. 25× 12﹣ 850÷ 17 0.25 ×99+25%
6÷ 7﹣
÷ [ ( + )× ] .
( 2011?瑞安市) ( 1) 360+24÷ 15× 30 ( 2) 0.25 × 7.2+2.8 ÷ 0.5 ( 3) × 29﹣ 8×
0÷ =0, 9.42
×
0.1=0.942 , ﹣ = , 0.4
2=0.16 ,
1÷ = , 1 ﹣ + = ;
6.① 92× 13+28 =1196+28, =1224; ② 4.2 ÷1.5 ﹣ 0.36 =2.8 ﹣0.36 , =2.44 ;
③ 78×
=( 79﹣1)× ,
=79× ﹣ 1× ,
①
②
小升初真题混2合运算 ----
③
④
.
参考答案:
1.① 428÷[32 ÷( 4+4) ] , =428÷ [32 ÷ 8] , =428÷ 4, =107; ② 127× 8÷127× 8, =127÷ 127× 8× 8, =8× 8, =64 2.( 1) 9080﹣ 35× 26, =9080﹣ 910, =8170; ( 2) 17÷ 3.4+1.48 , =5+1.48 , =6.48 ;