问题
解答题
脱式计算.
|
答案
(1)17.5÷12.5×1.4,
=1.4×1.4,
=1.96;
(2)1.58×99+1.58,
=1.58×(99+1),
=1.58×100,
=158;
(3)4.38÷0.125÷8,
=4.38÷(0.125×8),
=4.38÷1,
=4.38;
(4)6.4×4.5+3.6×4.5,
=(6.4+3.6)×4.5,
=10×4.5,
=45.
脱式计算.
|
(1)17.5÷12.5×1.4,
=1.4×1.4,
=1.96;
(2)1.58×99+1.58,
=1.58×(99+1),
=1.58×100,
=158;
(3)4.38÷0.125÷8,
=4.38÷(0.125×8),
=4.38÷1,
=4.38;
(4)6.4×4.5+3.6×4.5,
=(6.4+3.6)×4.5,
=10×4.5,
=45.