98-20=
9+40=
80-17=
80-9=
36+30=
8+54=
44+8=
91-8=
86+3 =
48-9 =
32+40=
42+8=
①85-26-32=
②100-34+17=
③39+15+45=
④28+54-4
3×6= 40-7= 20+39= 7×8= 7×4+20=
35+6= 9×4= 34-6= 6×5= 42+28-34=
56-3= 54-21= 7×6= 2×8= 78-(8+9)=
5×7= 3×9= 42-9= 52-7= 9×9-8=
68-47= 33+24= 5+35= 2×4+2=
39-28= 3×3= 1×6= 4×6-5=
42÷6= 28÷4= 9+36= 40-13=
5×8= 24÷8= 48÷6= 18+5=
72-18= 50-26= 18+30= 20÷5=
写作: 读作:
时间/秒
1
2
3
4
…
路程/km
7.68
15.36
23.04
30.72
①6x=18
②x:0.4=10:
③x﹣60%x=2
④=
9:=%= =:120=(填小数)