问题
解答题
下列各题怎样简便就怎样算.
|
答案
(1)7.8×36+78×6.4
=78×3.6+78×6.4
=78×(3.6+6.4)
=78×10
=780;
(2)74×14+111×24
=37×2×14+37×3×24
=37×(28+72)
=37×100
=3700.
下列各题怎样简便就怎样算.
|
(1)7.8×36+78×6.4
=78×3.6+78×6.4
=78×(3.6+6.4)
=78×10
=780;
(2)74×14+111×24
=37×2×14+37×3×24
=37×(28+72)
=37×100
=3700.