415 × 10⁵ = × 10

230 = × 10

940 milliardièmes = × 10

5 800 000 = × 10

0,064 7 = × 10

253 × 10⁶ = × 10

77,5 centaines de milliers = × 10

612 × 10^-6 = × 10

0,006 84 = × 10

530 dizaines = × 10