Question

4.44×9.8×2.5怎么简便计算？

Answer 1

4.44×9.8×2.5
=4×1.11×9.8×2.5
=4×2.5×1.11×9.8
=10×1.11×9.8
=1.11×98
=1.11×（100-2）
=111-2.22
=108.78

Answer 2

4.44×9.8×2.5的简便计算
（4+0.4+0.04）×2.5×9.8
=（10+1+0.1）×9.8
=98+9.8+0.98
=100-2+10-0.2+1-0.02
=110-2.2+1-0.02
=111-2.2-0.02
=108.8-0.02
=108.78

Answer 3

4.44×9.8×2.5

=1.11×4×（10—0.2）×2.5

=1.11×10×（10—0.2）

=11.1×（10—0.2）

=111—2.22

=108.78

Answer 4

遇25想4
4.44×9.8×2.5
=1.11×（4×2.5）×9.8
=1.11×（10×9.8）
=1.11×98
=1.11×100-1.11×2
=111-2.22
=108.78

Answer 5

4.44×9.8×2.5
＝（4+0.4+0.04）×2.5×9.8
＝（10+1+0.1）×9.8
＝11.1×（10－0.2）
＝11.1×10－11.1×0.2
＝111－2.22
＝108.78