问题
解答题
|
答案
(1)398×4,
≈400×4,
=1600;
398×4=1592;
(2)699×7,
≈700×7,
=4900;
699×7=4893;
(3)93÷5,
≈90÷5,
=18;
93÷5=18.6;
(4)62÷4,
≈60÷4,
=15;
62÷4=15.5.
|
(1)398×4,
≈400×4,
=1600;
398×4=1592;
(2)699×7,
≈700×7,
=4900;
699×7=4893;
(3)93÷5,
≈90÷5,
=18;
93÷5=18.6;
(4)62÷4,
≈60÷4,
=15;
62÷4=15.5.