6 szkoły podstawowej

Matematyka wokół nas 6

a)&nbsp; 0,25⋅4=1 b)&nbsp; 0,8⋅0,03=0,024

a)&nbsp; 285​+143​−121​=285​+186​−184​ =3811​−184​=287​

a)&nbsp; 5,75+153​=5,75+1106​=5,75+1,6=7,35 &nbsp; b)&nbsp; 361​−1,4=361​−1104​=361​−152​

a)&nbsp; 5,12:(5−2,44)=5,12:2,56=512:256=2 b)&nbsp; 23+(351​−131​)=8+(3153​−1155​)=8+(21518​−1155​)

999​=111​

0,85=10085​=2017​

65​=0,83333…≈0,83

a)&nbsp; 0,135≈0,14

1710zl+32​⋅1710zl=1710zl+2⋅570zl=1710zl+1140zl=2850zl

90⋅6015​=90⋅41​=490​=245​=2221​=22,5