Question

Calculează, folosind procedeul de calcul rapid




rapiddd va rogggg!!!!​

Answer 1

Răspuns:

Explicație pas cu pas:

150x5=15x10x5=5x5x3x10=25x3x10=75x10=750

320x5=32x10x5=16x2x10x5=16x10x10=16x100=1600

800x5=8x100x5=40x100=4000

300x25=100x3x25=100x75=7500

500x25=100x5x25=100x125=12500

240x25=6x4x10x25=6x10x100=6x1000=6000

220x50=11x2x10x50=11x10x100=11x1000=11000

450x50=45x10x5x10=225x100=22500

240x50=12x2x10x50=12x10x100=12x1000=12000

Sper ca te-am ajutat

Answer 2

Răspuns:

150 × 5 = 750

320× 5 =1.600

800 × 5 = 4.000

300 × 25 = 7.500

500 × 25 = 12.500

240 × 25 = 6.000

220 × 50 = 11.000

450× 50 = 22.500

240 × 50 =12.000