Question

在估算8.12×5.98時(shí)，誤差較小的是（　�。�

A．8×6

B．8×7

C．9×7

Answer 1

分析：估算小數(shù)乘法時(shí)一般要根據(jù)“四舍五入“法，把小數(shù)看作整數(shù)來進(jìn)行計(jì)算，8.12×5.98要把8.12看作8，5.98看作6來進(jìn)行計(jì)算．據(jù)此解答．

解答：解：8.12×5.98≈8×6．
故選：A．

點(diǎn)評(píng)：本題考查了學(xué)生對(duì)小數(shù)估算乘法知識(shí)的掌握情況．