3.6÷0.4=
=
401÷50≈
30%×90=
0.32=
⑴1号球在白球西偏北50°方向20cm处;⑵5号球在白球南偏西40°方向15cm处;⑶8号球在白球东偏南50°方向20cm处。
0.8×5= 3.6+1.4= = =
= 0×75%= 4.8÷24= 90×30%=
387+102= 4.8× = 18.6-5.6= 0.25×39×4=
9.6+0.1= + = 32×125%= ×8+ =
3.98+2=
÷ =
3.6× =
+ =
1÷20%=
20×5.5=
﹣ =
0.23=
× =
2.5×12=
0.125×9×8=
0.99+1.1=
43÷1000=
48=
2×÷2×=
①1204+879+121
②74×60%+×25+0.6
③1.2÷×(0.6﹣)
④×[﹣(+)]