我用了_______________分_______________秒,對_______________道,錯_______________道。
45-3= 65-3= 34-2=
45-30= 65-30= 34-20=
36-2= 35-2= 86-5=
36-20= 35-20= 86-50=
48-2= 47-3= 78-4=
48-20= 47-30= 78-40=
56-5= 54-4= 54-3=
56-50= 54-40= 54-30=
86-6= 98-5= 57-4=
86-60= 98-50= 57-40=
我用了_______________分_______________秒,對_______________道,錯_______________道。
65-40= 88-60= 40+30=
86-50= 49-30= 80+6=
46-30= 67-60= 65-5=
98-70= 54-30= 50-50=
45-30= 38-20= 60-20=
98-8= 68-40= 75-50=
96-30= 53-40= 73-50=
54-40= 85-80= 91-10=
48-30= 58-40= 30+50-7=
30+40+6= 50+20-30= 40+30+8=
我用了_______________分_______________秒,對_______________道,錯_______________道。
36-5= 99-8= 59-7=
49-8= 77-6= 35-4=
58-4= 58-6= 28-6=
67-3= 46-5= 76-3=
59-6= 38-7= 89-5=
46-4= 29-6= 47-7=
28-7= 68-4= 67-6=
45-3= 37-5= 67-5=
87-4= 26-4= 98-3=
95-3= 64-3= 39-4=
我用了_______________分_______________秒,對_______________道,錯_______________道。
14-6= 41-6= 65-8=
25-7= 43-8= 61-6=
34-8= 51-4= 31-5=
16-9= 86-9= 26-9=
34-5= 40-6= 15-6=
我用了_______________分_______________秒,對_______________道,錯_______________道。
45-3= 65-3= 34-2=
45-30= 65-30= 34-20=
36-2= 35-2= 86-5=
36-20= 35-20= 86-50=
48-2= 47-3= 78-4=
48-20= 47-30= 78-40=
56-5= 54-4= 54-3=
56-50= 54-40= 54-30=
86-6= 98-5= 57-4=
86-60= 98-50= 57-40=
我用了_______________分_______________秒,對_______________道,錯_______________道。
65-40= 88-60= 40+30=
86-50= 49-30= 80+6=
46-30= 67-60= 65-5=
98-70= 54-30= 50-50=
45-30= 38-20= 60-20=