помагите плиз 234 плиззз. Created by 123456775868. matematika-ru

помагите плиз 234 плиззз...

July 2022 2 7 Report

помагите плиз 234 плиззз

popovsvetlana 180×15=180×(10+5)=180×10+180×5=1800+900=1080
33×15=33×(10+5)=33×10+33×5=330+165=495
840×15=840×(10+5)=840×10+840×5=8400+4200=12600
61×15=61×(10+5)=61×10+61×5=610+305=915

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kristina210405 180*15=180*(10+5)=180*10+180*5=1800+900=2700
33*15=33*(10+5)=33*10+33*5=330+165=495
840*15=840*(10+5)=840*10+840*5=8400+4200=12600
61*15=61*(10+5)=61*10+61*5=610+305=915

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