Question

99x63十99用简便方法计算

Answer 1

简算：
99×63+99
=99×63+99×1
=99×（63+1）
=99×64
=（100-1）×64
=100×64-1×64
=6400-64
=6336

Answer 2

99x63十99用简便方法计算
=99x(63+1)
=99x64
=（100-1）x64
=100x64-64
=6400-64
=6336

Answer 3

乘法分配律为：两个数的和与一个数相乘，先将它们与这个数分别相乘，再相加，积不变．即：（a+b）×c=a×c+b×c．反过来则：a×c+b×c=（a+b）×c
99 × 63+99
= 99×(63+1)
= 99×64
=( 100-1)×64
= 100×64-64
= 6400-64
= 6336

Answer 4

=（99+1）×63
=100×63
=6300