35×99
=35×(100-1)
=35×100-35×1
=3500-35
=3465;
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=35×(100-1)
=35×100-35
=3500-35
=3465
=35×(100-1)=35×100-35=3500-35=3465
等于3465
=(100-1)乘以35
=35乘以100-35x1
=3500-35
=3465