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简介:
01.分解式
25×(40+4)
=25×40+25×4
=1000+100
=1100
03.特殊例题1
99×25.6+25.6
=99×25.6+25.6×1
=25.6×(99+1)
=25.6×100
=2560
05.特殊例题3
99×26
=(100-1)×26
=100×26-1×26
=2600-26
=2574
02.合并式
135× 12.3-135×2.3
=135×(12.3-2.3)
=135×10
=1350
04.特殊例题2
45×102
=45×(100+2)
=45×100+45×2
=4500+90
=4590
06.特殊例题4
5.3×8+35.3×6-4×35.3
=35.3×(8+6-4)
=35.3×10
= 353