问题
解答题
306+19-95
(340-290)÷25
38×(63-24)
420÷30×352
230-180÷18
333-192-108
自己再出一道先减后加的算式,并算出来.
答案
(1)306+19-95
=325-95
=230;
(2)(340-290)÷25
=50÷25
=2;
(3)38×(63-24)
=38×39
=342;
(4)420÷30×352
=14×352
=4928;
(5)230-180÷18
=230-10
=220;
(6)333-192-108
=333-(192+108)
=333-300
=33.
先减后加的算式:
450-230+112
=220+112
=332.