预约小初高体验课 享受1对1辅导
各位家长请注意:此表单用于预约体验课,不想预约的家长,请勿填写
471.
[4.8+1+ (3.5-3.46) ]×0.5
=[4.8+1+0.04]×0.5
=29.8×0.5
=14.9
472.9.18-3.93+5.93
=5.93-3.93+9.18
=11.18
473.
0.125×3.2×25
= (0.125×8) × (0.4×25)
=1×10
=10
474.
380+120÷4,
=380+30,
=410;
475.
20× (91÷7) ,
=20×13,
=260;
476.
120÷24×4,
=5×4
=20;
477.
3.15×9.9
=3.15×(10 -0.1)
=3.15×10-3.15×0.1
=31.5-0.315
=31.185