Question

213. Compară, scriind semnul de relație potrivit
a) 23x4 (20 x 4) + (3 x 4) b) 23 x 4 (15 x 4) + (8 x 4)
32 x 3 (30 x 3) + (2 x 3) 35 x 2 (25 x 2) + (10 x 2)
c) 34 x 2
(30 X 2) + (5 x 2)
(20 x 2) + (
52)
28 x 2​

Answer 1

Explicație pas cu pas:

a) 23×4= 23×4

32×3= 32×3

b) 23×4= 23×4

35×2= 35x2

c) 34×2<35×2

28×2>25×2

Answer 2

Explicație pas cu pas:

a)

23×4=(20×4)+(3×4)

23×4=92

(20×4)+(3×4)=80+12=92

92=92

a)

32×3=30×3)+(2×3)

32×3=96

(30×3)+(2×3)=90+6=96

96=96

b)

23×4=(15×4)+(8×4)

23×4=92

(15×4)+(8×4)=60+32=92

92=92

b)

35×2=(25×2)+(10×2)

35×2=70

(25×2)+(10×2)=50+20=70

70=70

c)

34×2<(30×2)+(5×2)

34×2=68

(30×2)+(5×2)=60+10=70

68<70

c)

28×2>(20×2)+(5×2)

28×2=56

(20×2)+(5×2)=40+10=50

56>50