Oblicz zumy 3 sbosobami szkoła
podstawowa –1.17 +26 =
2. 17+26 =
3.17+26 =
1. 16+35=
2.16+35=
3.16+35=
1.15+29=
2.15+29=
3. 15 +29=
1.24+19=
2.24+19=
3.24+19=
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1) 17+26=10+20+7+6=30+13=43
2) 17+26=15+2+25+1=43
3) 17+26=10+2+5+20+5+1=43
1) 16+35=10+6+30+5=51
2) 16+35=15+1+30+5=51
3) 16+35=10+5+1+10+10+10+5=51
1) 15+29=10+5+20+9=44
2) 15+29=10+5+10+10+5+4=44
3) 15+29=15+20+5+4=44
1) 24+19=20+4+10+9=43
2) 24+19=10+10+4+10+9=43
3) 24+19=20+4+10+5+4=43
17+26=(10+20)+(7+6)=30+13=43
17+26= 20+23=43
17+26=10+7+20+6=43
16+35= (10+30)+(6+5)=40+11=51
16+35=20+31=51
16+35=10+6+30+5=51
15+29= (10+20)+(5+9)=30+14=44
15+29= 20+24=44
15+29=10+5+20+9=44
24+19= (20+10)+(4+9)=30+13=43
24+19= 30+13=43
24+19= 20+4+10+9=43