Question

Scrie toate adunările şi scăderile posibile cu nume- rele: ​

Answer 1

a) 4, 17, 13

Adunări:

$4+17=21\\4+13=17\\17+13=30\\4+17+13=34$

Scăderi:

$4-17=-13\\4-13=-9\\17-4=13\\17-13=4\\13-4=9\\13-17=-4\\4-17-13=-26\\17-13-4=0\\13-17-4=-8$

b) 15, 2, 13

Adunări:

$2+15=17\\2+13=15\\15+13=28\\2+15+13=30$

Scăderi:

$2-15=-13\\2-13=-11\\15-2=13\\15-13=2\\13-2=11\\13-15=-2\\2-15-13=-26\\15-2-13=0\\13-15-2=-4$

c) 7, 12, 19

Adunări:

$7+12=19\\7+19=26\\12+19=31\\7+12+19=38$

Scăderi:

$7-12=-5\\7-19=-12\\12-7=5\\12-19=-7\\19-7=12\\19-12=7\\7-12-19=-24\\12-19-7=-14\\19-12-7=0$