(4)、特殊2 (5)、特殊3 (6)、特殊4
45×102 99×26 35×8+35×6-4×35
=45×(100+2) =(100-1)×26 =35×(8+6-4)
=45×100+45×2 =100×26-1×26 =35×10
=4500+ 90 =2600-26 =350
=4590 =2574
9、 连续减法简便运算例子:
528-65-35 528-89-128 528-(150+128)
=528-(65+35) =528-128-89 =528-128-150
=528-100 =400-89 =400-150
=428 =311 =250
10、 连续除法简便运算例子:
3200÷25÷4
=3200÷(25×4)
=3200÷100
=32
11、 其它简便运算例子:
256-58+ 44 250÷8×4
=256+ 44-58 =250×4÷8
=300-58 =1000÷8
12、有关简算的拓展:
102×38-38×2 125×25×32 125×88 3.25+1.98+10.32-1.98 37×96+37×3+37 0.6+0.4-0.6+0.4 38×99+99