15.8×5.8+4.2×4.2+11.6×4.2用简便方法算

来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 14:29:09
15.8×5.8+4.2×4.2+11.6×4.2用简便方法算15.8×5.8+4.2×4.2+11.6×4.2用简便方法算15.8×5.8+4.2×4.2+11.6×4.2用简便方法算15.8×5.

15.8×5.8+4.2×4.2+11.6×4.2用简便方法算
15.8×5.8+4.2×4.2+11.6×4.2用简便方法算

15.8×5.8+4.2×4.2+11.6×4.2用简便方法算
15.8×5.8+4.2×4.2+11.6×4.2
=15.8×5.8+4.2×(4.2+11.6)
=15.8×5.8+4.2×15.8
=15.8×(5.8+4.2)
=15.8×10
=158