Question

a) 1\6+1,5

b)3\5+3,5

c)2,5-2\3

d)1 7\8-0,4

e)2,7x4\9

f)7\10x0,7

g)2,75:11\6

h)1\2:1,2

help D: !!!!!

na koniec roku szkolnego mam kiepskie oceny z matmy :\

Answer 1

a) 1/6 + 1,5 = 1/6 + 3/2 = 1/6 + 9/6 = 10/6 = 1 i 4/6 = 1 i 2/3
b) 3/5 + 3,5 = 3/5 + 7/2 = 6/10 + 35/10 = 41/10 = 4,1

c) 2,5-2/3 = 5/2 - 2/3 = 15/6 - 4/6 = 11/6 = 1 i 5/6
d) 17/8 -0,4 = 17/8 - 4/10 = 85/40 - 16/40 = 69/40 = 1 i 29/40
e) 2,7 * 4/9 = 27  .   4 (skracanie na ukos ) =  3 . 2 = 6/5 = 1 i 1/5
                        10      9                                            5   1
f) 7/10 * 7/10 = 49/100
g) 2,75 : 11/6 = 2 i 3/4 : 11/6 = 11/4 * 6/11 = 6/4 = 1 i 1/2
h) 1/2 : 1,2 = 1/2 : 12/10 = 1/2 * 10/12 = 5/12


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