Matematyka

Autorzy:Jacek Lech, Marek Pisarski , Marcin Braun

Wydawnictwo:GWO

Rok wydania:2015

Oblicz 4.72 gwiazdek na podstawie 7 opinii
  1. Gimnazjum
  2. 1 Klasa
  3. Matematyka

`a)\ 5+(3 3/4-2,25)=5+(3,75-2,25)=5+1,5=6,5`

`b)\ 6 1/7-(3 3/7-2 1/14)=6 2/14-(3 6/14-2 1/14)=6 2/14-1 5/14=5 16/14-1 5/14=4 11/14`

`c)\ 7 3/8-(1 3/4+3,125)=7 3/8-(1 6/8+3 1/8)=7 3/8-4 7/8=6 11/8-4 7/8=2 4/8=2 1/2`

`d)\ 9 1/5+(3,2-1 2/9)=9 1/5+(3 2/10-1 2/9)=9 1/5+(3 18/90-1 20/90)=9 1/5+(2 108/90-1 20/90)=`

`\ \ \ =9 1/5+1 88/90=9 9/45+1 44/45=10 53/45=11 8/45`

`e)\ 11-(12 5/7-2,375)=11-(12 5/7-2 3/8)=11-(12 40/56-2 21/56)=11-10 19/56=10 56/56-10 19/56=37/56`

`f)\ 37 5/8-(6 3/4+1,625)=37 5/8-(6 6/8+1 5/8)=37 5/8-7 11/8=37 5/8-8 3/8=29 2/8=29 1/4`

`g)\ 11 3/4+(3 2/9-1 1/72)=11 3/4+(3 16/72-1 1/72)=11 3/4+2 15/72=11 3/4+2 5/24=11 18/24+2 5/24=13 23/24`

`h)\ 25 2/13-(7 1/6-2 2/3)=25 2/13-(6 7/6-2 4/6)=25 2/13-4 3/6=25 2/13-4 1/2=25 4/26-4 13/26=24 30/26-4 13/26=20 17/26`

`i)\ 41 4/15-(23 3/6-21,2)=41 4/15-(23 1/2-21 2/10)=41 4/15-(23 5/10-21 2/10)=41 4/15-2 3/10=41 8/30-2 9/30=40 38/30-2 9/30=38 29/30`