Question

va rog frumos ex) 8 si 11

Answer 1

8.
A. 3×2×10 = 6 × 10 = 60
1 × 7 ×10 = 7 × 10=70
2×4×10 =80
3×3×10 =90
5×2×10=100
B. 7+2+10=19
4+6+10=20
3+5+10=18
1+8+10=18
9+6+10=25

11. 1.a=17
2.b=40
3.c=100
4.d=19
sper ca te am ajutat !☺

Answer 2

8) a. 3 x 2 = 6 x 10 = 60
        1 x 7 = 7 x 10 = 70
        2 x 4 = 8 x 10 = 80
        3 x 3 = 9 x 10 = 90
        5 x 2 = 10 x 10 = 100

    b. 7 + 2 = 9 + 10 = 19
        4 + 6 = 10 + 10 = 20
        3 + 5 = 8 + 10 = 18
        1 + 8 = 9 + 10 = 19
        9 + 6 = 15 + 10 = 25

11) 80 - a = 63    80 - 63 = 17 ( a )
      20 + b = 60   20 + 60 = 80 ( b )
      c - 70 = 30    70 + 30 = 100 ( c )
      d + 30 = 49   49 + 30 = 79 ( d )