Question

95. Calculează în linie, după model.
MODEL
215x30=215 x 3 x 10 = 645 x 10 = 6 450
b) 422 × 20
a) 120 × 40
220 × 40
390 × 20
c) 198 x 50
310 x 50
d) 216 x 60
432 x 60

Answer 1

Răspuns:

422×20=422×2×10=8440

120×40=120×4×10=4800

220×40=220×4×10=8800

Answer 2

b)422•20=422•2•10=844•10=8440

a)120•40=120•4•10=480•10=4800

220•40=220•4•10=880•10=8800

390•20=390•2•10=780•10=7800

c)198•50=198•5•10=990•10=9900

310•50=310•5•10=1550•10=15500

d)216•60=216•6•10=1272•10=12720

432•60=432•6•10=2592•10=25920

Sper să fie de folos,Mult succes la șcaolă!