
Calcule cu fracții
Presentation
•
Mathematics
•
6th Grade
•
Hard
Roxana G
FREE Resource
6 Slides • 5 Questions
1
Calcule cu fracții
2
Fill in the Blanks
Type answer...
3
Explicație
Avem 27×724×617=27×76×2×2×617=2×17=34.
4
Fill in the Blanks
Type answer...
5
Explicație
Deoarece numitorul comun este 6, avem
219+311+611=657+622+611=657+22+11=690=15.
6
Fill in the Blanks
Type answer...
7
Explicație
Folosind A × B + A × C = A × (B + C), putem calcula expresia dată după cum urmează:
=(81−8)×(−4,373)+(−87)×(−3,627) =(−87)×(−4,373)+(−87)×(−3,627) =(−87)×[(−4,373)+(−3,627)]=(−87)×(−8)=7.
8
Multiple Choice
61 103 157
Găsiți diferența dintre cea mai mare și cea mai mică dintre fracțiile de mai sus.
103
125
61
152
9
Explicație
Deoarece
61=305, 103=309, 157=3014,
cel mai mare dintre cele trei este 157, în timp ce cel mai mic este 61.
Prin urmare, diferența lor este
157−61=3014−305=309=103.
10
Fill in the Blanks
Type answer...
11
Explicație
Deoarece scăderea este echivalentă cu adunarea inversului aditiv, valorile a și b sunt
a = (+ 6) - (+ 3) + (+ 5) = (+ 6) + (- 3) + (+ 5) = [(+ 6) + (+ 5)] + (- 3)
= (+ 11) + (- 3) = + 8,
b=(+31)−(+310)=(+31)+(−310)=−3.
Astfel, aplicând același principiu încă o dată pe a − b dă
a − b = (+ 8) - (- 3) = (+ 8) + (+ 3) = 11.
Calcule cu fracții
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