文档介绍：训练（五） 40X7 = 32X4= 0X80= 120+29 = 76—17 = 15+44 = 120-55 = 240+520= 850-180=
44+33 = 152-53 = 405+45 = 190-89 = 34+42 = 130-27 = 499+54= 195-120= 80-44 = 146—66 = 345+567 = 100-79 =
93-24 = 166-67 = 48+34 = 117—40=
796-236 =
34+16 =
120-23 =
85-46 =
150X2 =
9+72 =
363-47 =
987-654 =
53X10 =
450-230=
486-112 =
64—43 =
52X0=
678-523 = 25X4= 125X8 = 40X7 = 66+9=
77 — 38 = 150-70 =
95 + 15 = 804-8 = 8X900= 3504-7 = 3X330 =
训练（六）
90X5=
30X5=
18X3=
934-3 =
50+40=
90-11=
22+78=
8804-4 =
90X4=
725 X 0=
6304-9=
1600-80=
76+22=
928-0=
5604-7=
04-99 =
500X5=
550+50=
700 X 6=
0X99 =
544-9=
37+940=
18X4=
904-9 =
54+31=
900 X 2=
320X3=
368+112=
33X3=
8000-800=
50X14=
640+90=
604-10=
354-7=
724-64-2=
68-25=
120-80=
480+20=
700 X 3=
26 X 20=
100-64=
920-630=
4X21=
850-420=
50X10=
5X24=
15+45=
790-310=
6X7=
80X5=
训练（七）
210X4=
40 X 25=
90+550=
644-8=
90X5=
9 X 9+9=
300 X 6=
580-90=
40X8=
94—65=
800 X 4=
50X6=
25X5=
11X4=
36039=
150—23=
900-50=
230 X 2=
14X5=
95X0=
54X2=
560+80=
850—80=
40X8=
400—36=
200 X 7=
870+50=
300 X 6=
5+5X3=
85+ 47=
43X3=
9+1X4=
350+50=
310X3=
1804-9=
90—26=
78-90=
200 X 5=
800 X 8=
19+31=
4004