<span>
(670+31)•407=285307
(258+902)•407=472120
5096:(706-69)=8
6370:(706-615)=70
</span><span>
(1) (670+31)*407=285307
(2) (258+902)*407=472120
(3) 5096/(706-69)=8
<span>(4) 6370/(706-615)=70</span></span>
1)35280:7=5040
2)63×80=5040
3)5040-5040=0
4)0:97=0
5)306×24=7344
6)7344:72=102
7)102-0=102
234124 |<u> 44 </u>
<u>220 </u> 5321
141
<u>132 </u>
92
<u>88 </u>
44
<u>44</u>
0