Question

直接写出得数．1.2+3.58= 400÷25÷8= 15 9 - 5 6 + 4 9 = 0.9+99×0.

直接写出得数．1.2+3.58= 400÷25÷8= 15 9 - 5 6 + 4 9 = 0.9+99×0.9= 4 5 -( 1 2 - 1 5 ) = 69× 15 23 = 3 8 ×8÷ 3 8 = （ 3 7 + 3 4 ）×4=

Answer 1

1.2+3.58=4.78；       400÷25÷8=2；            15 9 - 5 6 + 4 9 = 23 18 ；            0.9+99×0.9=90； 4 5 -（ 1 2 - 1 5 ）= 1 2 ；          69× 15 23 =45；               3 8 ×8÷ 3 8 =8；            （ 3 7 + 3 4 ）×4=4 5 7 ．