

Dodawanie i odejmowanie
Presentation
•
Mathematics
•
1st - 5th Grade
•
Hard
Dominik Janik
FREE Resource
4 Slides • 2 Questions
1
Dodawanie i odejmowanie
Podstawa

2
Czym jest dodawanie?
Wyobraźcie sobie że jesteście w sklepie. Masz 4 ogórki w domu, a kupiłeś 5. Ile będzie ogórków w domu?
Ok mamy w domu 4 i musimy dodać 5+4=?
Jak obliczyć? 5+4=9
3
Czym jest odejmowanie?
Wyobraźcie sobie że jesteście u kolegi. Wisisz koledze 100zł. a masz 200zł. Ile zostanie ci reszty?
200-100=?
200
-100
100
200-100=100zł.
4
Po co się trudzić jak można odwrócić?
Łatwej jest tak doadć np. x+88=158
158-88=70
x=70
5
Multiple Choice
Ile to 90+80?
100
-100
90
170
6
Multiple Choice
Ile to x+70=150
x=789
98
88
wszystko jest poprawne
Dodawanie i odejmowanie
Podstawa

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