Question

9.9乘7.23加0.723用简便运算怎么算

Answer 1

9.9x7.23+0.723=99x0.723+0.723=（99+1）x0.723=100x0.723=72.3

Answer 2

原式=（10-0.1）× 7.23+0.723 =10× 7.23-0.1× 7.23+0.723 =72.3-0.723+0.723 =72.3请采纳

Answer 3

=9.9×7.23+0.1×7.23=（9.9+0.1）×7.23=10×7.23=72.3