Вычесли удобным способом. 87*64+87*36 39*16+39*4 96*77-96*76 48*61-40*61 24*49+24 34*21-34. Created by protasov162005. matematika-ru

Вычесли удобным способом. 87*64+87*36 39*16+39*4 96*77-96*76 48*61-40*61 24*49+...

protasov162005 @protasov162005

July 2022 2 1 Report

Вычесли удобным способом.
87*64+87*36
39*16+39*4
96*77-96*76
48*61-40*61
24*49+24
34*21-34

jekadva 87*64+87*36=87*(64+36)=87*100=8700
39*16+39*4=39*(16+4)=39*20=780
96*77-96*76=96*(77-76)=96*1=96
48*61-40*61=61*(48-40)=61*8=488
24*49+24=24*(49+1)=24*50=1200
34*21-34=34*(21-1)=34*20=680

tanylevkovskay 87*64=5568 87*36=3132 5568+3132=8700
39*16=624 39*4=156 624+156=780
96*77=7392 96*76=7296 7392-7296=96
48*61=2928 40*61=2440 2928-2440=488
24*49=1176 1176+24=1200
34*21=714 714-34=680

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