=3.5× 1/4+360×0.25+0.25×36.5
=(3.5+360+36.5)×0.25
=400×0.25
= 100
Second: {7.25 times 40%} plus {2.75 times 2/5} divided by 20%.
=7.25×0.4+2.75÷20%×0.4
=7.25×0.4+ 13.75×0.4
=(7.25+ 13.75)×0.4
=2 1×0.4
=8.4
Third: 0.4 times 60% plus 7 and 25 times 19 times 0.4 plus 7 and 25 times 19 times 60%.
=0.4×60%+7 and 19/25×(0.4+60%)
=6/25+7 and 19/25
=8
Fourth: 1.9 plus 19% times {4.8 minus 3 and 4/5} divided by {2 plus 65438+9/00 minus 190%}
= 1.9+0. 19× 1÷ 1
= 1.9+0. 19
=2.09