Question

3.56×5.2＋35.2×0.3＋18×0.356简便方法怎麼做

Answer 1

3.56×5.2+35.6×0.3+18×0.356
=35.6×0.52+35.6×0.3+0.18×35.6
=35.6×(0.52+0.3+0.18)
=35.6×1
=35.6

Answer 2

3.56×5.2＋35.2×0.3＋18×0.356
=3.56×5.2＋3.52×3＋1.8×3.56
=3.56×(5.2+1.8)+3.52×3
=3.56×7 +3.52×3
=3.52×7+0.04×7+3.52×3
=3.52×(7+3)+0.04×7
=35.2+0.28=35.48