如题所述
第1个回答 2023-03-22
32X(100+1)
=32X100+32x1
=3200+32
=3232
99x18+99x2
=99X(18+2)
=99X20
=1980
=32X100+32x1
=3200+32
=3232
99x18+99x2
=99X(18+2)
=99X20
=1980
第2个回答 2023-03-21
(1)32×101
=32×100+32×1
=3200+32
=3232
(2)99×18+2×99
=99×(18+2)
=99×20
=1980
=32×100+32×1
=3200+32
=3232
(2)99×18+2×99
=99×(18+2)
=99×20
=1980
第3个回答 2023-03-22
=(100+1)×32
=100×32+1×32
=3200+32
=3232
=(18+2)×99
=20×99
=20×(100-1)
=20×100-20×1
=2000-20
=1980
=100×32+1×32
=3200+32
=3232
=(18+2)×99
=20×99
=20×(100-1)
=20×100-20×1
=2000-20
=1980