简便运算 98*34 101*48-48

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简便运算 98*34 101*48-48
简便运算 98*34 101*48-48

简便运算 98*34 101*48-48
98*34=(100-2)*34=3400-68=3332
101*48-48=(101-1)*48=100*48=4800

98×34
=(100-2)×34
=100×34-2×34
=3400-68
=3332
101×48-48
=(101-1)×48
=100×48
=4800

98*34
=(100-2)*34
=3400-68
=3332
101*48-48
=(101-1)*48
=4800