小学数学四年级下册口算题.docx

45+15X6=
75-11 X5=
56-14 =
2400-40=
710-420=
250^5X8=
.42+7-29=
65-13 =
3600-30=
50 X90=
6X5 ^2X4=
5600-80=
75-15 =
87-3=
22X8X5=
30X3+8=
25 X16=
120-24 =
25X16=
12X5=
400詔+20=
120X25=
200-25 =
48X9=
6300-30=
10+12-3=0
36X1 仁
800-16 =
696-3=
690 — 420=
(80 -20+80) -4=
1025-25=
840-21 =
125X6=
102+284=
70+(100-10 X5)=
336+70=
560-14 =
48X25=
480+290=
360-40=
25X9X4=
390-13 =
780-20=
930-30=
40X20=
200-33 X3=
600-15 =
72-45=
23X3=
80-25=
3020-1010=
32 X30=
362-85=
800 X30=
70+45=
12X50=
22 X30=
720-45-2=
2100-70=
90X2=
25X8=
6X201 =
3000+200=
612-12=
16X6=
23X11 =
17X5=
48 X125=
360+140=
300X6=
125-25=
4 >60=
35X8=
1800-30=
540^9=
4200-2200=
4500-900=
80-24=
880-20=
30X20=
220+80=
170+90=
420-35-2=
45 X14=
400-4=
20X8X5=
4800-40=
25X32=
3X90=
350-80=
600-3 X200=
14X201 =
45-15=
32+15=
160+70=
20+20-2=
80-16=
78-2=
28X7=
18-64 —=
35-25 吒=
4200-20=
45X12=
40 X60=
42 弋+20=
36+8-40=
2500-50=
6X35=
32X20=
40-5 X7=
2800-40=
16X5=
69-23=
468+197=
80+60-3=
98-14 =
32 X20=
67+25=
6X80=
41+18—2=
96-24 =
67X4=
210-70=
80-20 =
4700-10=
35 X18=
57+19=
725-76-24=
134 X3=
729+302=
75 X19+75=
60-30=
125X24=
125X8=
45 - 18=
41 - 23=
70X60=
360-24=
25X4=
2400^20=
45X22=
91-28=
1036-155-245=
300 X52=
25 X6 X4=
45X5=
58+79+42=
865 X99+865=
5X42=
25X28=
375+99=
80X5X6=
67X9+67=
X=
15X6=
7000-70=
90-25=
655+777+345=
15X8=
125X48=
45+45=
35 X35+65X35=
25X9X4X7=
125 X4=
125X16=
624 - 198=
125X80=
1814-378-422=
X1000=
15+22=
9600-30=
44-15=
398+558+442=
21 X8=
102 X34=
630-90=
1800-90=
1800十5吃=
32X0 .仁
4500-45=
720-9-4=
125X16=
22^6X5=
572 X8=
25 X40=
320 X2=
97+18=
870-232-168=
372 X0=
490-35-2=
50 X50=
10X24=
-6=
X0=
360-45-2=
33^6X5=
45 X14=
7200-45-2=
X0=
35X18=
12X40=
26+14=
7365-3999=
X0=
264+198=
26X20=
81-27=
1800-36=
384-4=
2800^25-4=
62+18=