Question

Oblicz nie w pamięci zapisz swoje obliczenia (wprowadzanie do wspólnego mianowinka itd.)

a)4/5 + 1 2/3 + 3/5 + 1/3= ( 4/5 + 3/5) + ( 1 2/3 + 1/3)=

b) 1 3/4 + 4/7 + 3 5/7 + 2 1/4=

c)1 1/3 + 2 5/9 + 2 1/3 + 1 7/9=

d) 5/8 + 1 3/4 + 1 2/8 + 1/8 + 2 1/4=

Potrzebne na dzisiaj

Answer 1

a)4/5 + 1 2/3 + 3/5 + 1/3= ( 4/5 + 3/5) + ( 1 2/3 + 1/3)=7/5+1 3/3= 1 2/5+2=  3 2/5 a w zapisie dziesiętnym to 3,04

b) 1 3/4 + 4/7 + 3 5/7 + 2 1/4=(1 3/4 + 2 1/4) +(3 5/7+ 4/7)= 4+3 9/7= 4+4 2/7= 8 2/7 a w zapisie to 8,(285714)

c)1 1/3 + 2 5/9 + 2 1/3 + 1 7/9= (1 1/3 +2  1/3)+ (2 5/9+ 1 7/9)= 3 2/3 +3 12/9= 3 2/3 + 4 3/9 = 3 6/9 + 4 3/9= 8 a w zapisie to 8,00

d) 5/8 + 1 3/4 + 1 2/8 + 1/8 + 2 1/4=(5/8 + 1/8+ 12/8) + (13/4 + 21/4)=18/8+34/4=18/8+68/8=   86/8=  10 6/8= 10 3/4 a w zapisie to 10,75

Answer 2

a)4/5 + 1 2/3 + 3/5 + 1/3= ( 4/5 + 3/5) + ( 1 2/3 + 1/3)= 12/15 + 25/15= 37/15=2 7/15

b) 1 3/4 + 4/7 + 3 5/7 + 2 1/4= 7/4+4/7+26/7+9/4=49/28+104/28+16/28+63/28= =232/28=8 8/28=8 2/7

c)1 1/3 + 2 5/9 + 2 1/3 + 1 7/9= 4/3+23/9+7/3+16/9=12/9+23/9+21/9+16/9=72/9=8

d) 5/8 + 1 3/4 + 1 2/8 + 1/8 + 2 1/4= 5/8+7/4+10/8+1/8=5/8=14/8=10/8+1/8=30/8=

= 3 6/8=3 3/4