Question

2.Calculează, efectuând întâi suma, după model
2×(7+3)=2×10=20
a.5×(2+6)
6×(4+5)
b.(6+3)×9
(2+7)×8
c.4×(8+2)
9×(7+2)​

Answer 1

Răspuns:

a). 5•(2+6) = 5•8 = 40

6•(4+5) = 6•9 = 54

b). (6+3)•9 = 9•9 = 81

(2+7)•8 = 9•8 = 72

c). 4•(8+2) = 4•10 = 40

9•(7+2) = 9•9 = 81

==EVERGREEN==

Answer 2

Răspuns:

Explicație pas cu pas:

$\bf{a)5 \times (2 + 6) = 5 \times 8 =\large\bf\red{\underline{40}}}$

$\bf{6 \times (4 + 5) = 6 \times 9 =\large\bf\green{\underline{54}}}$

$\bf{b)(6 + 3) \times 9 = 9 \times 9 = \large\bf\red{\underline{81}} }$

$\bf{(2 + 7) \times 8 = 9 \times 8 =\large\bf\purple{\underline{72}}}$

$\bf{c)4 \times (8 + 2) = 4 \times 10 =\large\bf\orange{\underline{40}}}$

$\bf{9 \times (7 + 2) = 9 \times 9 =\large\bf\blue{\underline{81}}}$