Question

3. Calculati numerele urmatoare:
a. 53-23 + 30 =
b. 125 + 32 - 69 =
C. 1 +2 -3 + 5 - 4 =
d. 223 + 334 - 445 + 556-567 =
e. 23 +23+23+23+23+23+23 =
f. 22333 +22333 +22333 +22333 +22333 =
g. 1 +2 +3 +4 +5 + 5 + 6 + 7 + 8 + 9 =
h. 11 + 78 +67 + 22 + 89 + 33 =​

Answer 1

Răspuns:

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Answer 2

Explicație pas cu pas:

53-23+30=30+30=60

125+32-69=157-69=88

1+2-3+5-4=3-3+5-4=0+5-4=5-4=1

223+334-445+556-567=557-445+556-567=112+556-567=668-567=101

23+23+23+23+23+23+23=46+23+23+23+23+23=69+23+23+23+23=92+23+23+23=115+23+23=138+23=161

22333+22333+22333+22333+22333=44666+22333+22333+22333=66999+22333+22333=89332+22333=111665

1+2+3+4+5+5+6+7+8+9=3+2+4+5+5+6+7+8+9=5+4+5+5+6+7+8+9=9+5+5+6+7+8+9=14+5+6+7+8+9=19+6+7+8+9=25+7+8+9=32+8+9=40+9=49

11+78+67+22+89+33=88+67+22+89+33=155+22+89+33=177+89+33=266+33=299