3.4x7x1.5的简便计算
第1个回答 2021-09-12
方法1:
3.4×7×1.5
=(3+0.4)×1.5×7
=(3×1.5+0.4×1.5)×7
=(4.5+0.6)×7
=5.1×7
=35.7
方法2:
3.4×7×1.5
=(2×1.7)×7×1.5
=(1.7×7)×(2×1.5)
=11.9×3
=35.7
方法3:
3.4×7×1.5
=3.4×(7×1.5)
=3.4×10.5
=3.4×(10+0.5)
=3.4×10+3.4×0.5
=34+1.7
=35.7
3.4×7×1.5
=(3+0.4)×1.5×7
=(3×1.5+0.4×1.5)×7
=(4.5+0.6)×7
=5.1×7
=35.7
方法2:
3.4×7×1.5
=(2×1.7)×7×1.5
=(1.7×7)×(2×1.5)
=11.9×3
=35.7
方法3:
3.4×7×1.5
=3.4×(7×1.5)
=3.4×10.5
=3.4×(10+0.5)
=3.4×10+3.4×0.5
=34+1.7
=35.7
第2个回答 2022-09-14
这问题没有简便🌚
第3个回答 2017-09-11
3.4x7x1.5
=(3+0.4)(1+0.5)x7
=(3+0.4+1.5+0.2)x7
=5.1x7
=35.7
=(3+0.4)(1+0.5)x7
=(3+0.4+1.5+0.2)x7
=5.1x7
=35.7
第4个回答 2020-10-02
7/@三剑舞哦我不上课上不上课宿舍
第5个回答 2020-09-10
有没有人现在还不会背白鹭
还在拿着手机!!!!!!
还在拿着手机!!!!!!