Odpowiedź:
A) 2/5 + 77/100 = 200/500 + 385/500 = 585/500 = 1 85/500 = 1 17/100
B) 15,4 + 3 1/3 = 15 4/10 + 3 1/3 = 15 12/30+3 10/30 = 18 22/30
C)8 3/4 + 1,125 = 8,75(0)+1,125 = 9,875
D)1,75-5/6=1 18/24-20/24=42/24-20/24=22/24=11/12
E)3 1/5-2,25=3,5(0)-2,25=1,25
F)6,8-5 1/4 =6 8/10-5 1/4 = 6 32/40-5 10/40=1 22/40=1 11/20
G)6,4*5/8=6,4(00)*0,625=4
H) 2/15*0,75=2/15*3/4=8/60*45/60=360/60=6
I) 1 3/7*0,056=1 3/7*56/1000=1 3000/7000*392/7000=1 1176000/7000=169
J) 2,4:1 3/5=2 4/10:1 3/5=24/10:8/5=24/10*5/8=3/2=1 1/2
K)3 3/4:0,05=3 3/4:5/100=15/4:5/100=15/4*100/5=75/1=75
L) 2 5/6:3,4=2 5/6:3 4/10=17/6:34/10=17/6*10/34=170/204=85/102
Szczegółowe wyjaśnienie:
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Odpowiedź:
A) 2/5 + 77/100 = 200/500 + 385/500 = 585/500 = 1 85/500 = 1 17/100
B) 15,4 + 3 1/3 = 15 4/10 + 3 1/3 = 15 12/30+3 10/30 = 18 22/30
C)8 3/4 + 1,125 = 8,75(0)+1,125 = 9,875
D)1,75-5/6=1 18/24-20/24=42/24-20/24=22/24=11/12
E)3 1/5-2,25=3,5(0)-2,25=1,25
F)6,8-5 1/4 =6 8/10-5 1/4 = 6 32/40-5 10/40=1 22/40=1 11/20
G)6,4*5/8=6,4(00)*0,625=4
H) 2/15*0,75=2/15*3/4=8/60*45/60=360/60=6
I) 1 3/7*0,056=1 3/7*56/1000=1 3000/7000*392/7000=1 1176000/7000=169
J) 2,4:1 3/5=2 4/10:1 3/5=24/10:8/5=24/10*5/8=3/2=1 1/2
K)3 3/4:0,05=3 3/4:5/100=15/4:5/100=15/4*100/5=75/1=75
L) 2 5/6:3,4=2 5/6:3 4/10=17/6:34/10=17/6*10/34=170/204=85/102
Szczegółowe wyjaśnienie:
Zajeło mi pisanie tego godzine doceń to