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999.9×22.22+3.333×3334
=333.3×3×22.22+333.3×33.34
=333.3×(3×22.22+33.34)
=333.3×100
=33330
99又3/4+199又3/4+2999又3/4+3999又3/4+1
=100-1/4+200-1/4+3000-1/4+4000-1/4+1
=(100+200+3000+4000)-1/4×4+1
=7300-1+1
=7300
=333.3×3×22.22+333.3×33.34
=333.3×(3×22.22+33.34)
=333.3×100
=33330
99又3/4+199又3/4+2999又3/4+3999又3/4+1
=100-1/4+200-1/4+3000-1/4+4000-1/4+1
=(100+200+3000+4000)-1/4×4+1
=7300-1+1
=7300
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