解:64×22+88×9等于( 2200 )
∵已知需求出64×22+88×9等于多少
X × Y + X × Z = X × (Y + Z)
∴64 × 22 + 88 × 9
= 22 × (64 + 4 × 9)
= 22 × (64 + 36)
= 22 × 100
= 2200
答:64×22+88×9等于2200
64×22+88×9
=64×22+22×4×9
=64×22+22×36
=(64+36)×22
=100×22
=2200