Vuto la masamu silophweka ngati likuwonekera poyamba. Ali ndi njira ziwiri zowona zofanana. Monga lamulo, anthu amatha kuthetsa mwamsanga msinkhu. Koma kupeza njira yachiwiri yolondola yothetsera vutoli imapezeka m'modzi mwa zikwi chimodzi. Osachepera, motero akuti Mlengi wa mayesowa chifukwa cha maganizo osagwirizana - kampani yopita. Onetsetsani ngati mutha kukhala mmodzi yekha pa zana ndi khumi?
Cholinga
Kotero, muyenera kupeza njira ziwiri zolondola zokhudzana ndi masamu. Mudzawona mayankho olondola pansi pa chithunzi chili pansipa.
Yankho No. 1
Pa malo a funsoli, payenera kukhala nambala 40. Monga lamulo, anthu ambiri amathetsa vutoli motere:- Yambani ndi Kuwonjezera kwa 1 ndi 4, zomwe zimapangitsa kukhala okwana 5;
- Kenaka yonjezerani 2 ndi 5, chotsatira 7 chikuwonjezeredwa ku chiwerengero choyambirira cha mawu - 5, kuti mupeze 12;
- Kenaka gwiritsani ntchito lingaliro lofanana: 3 + 6 + 12 = 21;
- Apanso, ndondomeko yomweyo: 8 + 11 + 21 = 40.
Yankho No. 2
M'malo mwa funsoli pali nambala 96. Izi ndi momwe mungapezere njira yothetsera vutoli:- 1 + (1 × 4) = 5;
- 2 + (2x5) = 12;
- 3 + (3x6) = 21;
- 8 + (8x11) = 96.