numeri e matematica

Question 1

1, 2, 3, 4, 5, 6, 7, 8, 9, 10

Answer 1

uno,
due,
tre,
quatro,
cinque,
cei,
sette,
otto,
nove,
dieci

Question 2

11, 12, 13, 14, 15, 16

Answer 2

'undici,
d'odici,
tr'edici,
quatt'ordici,
qu'indici,
s'edici

Question 3

17, 18, 19

Answer 3

diciassete,
diciotto,
diciannove

Question 4

10, 20, 30, 40, 50, 60, 70, 80, 90

Answer 4

dieci,
venti,
trenta,
quaranta,
ciquanta,
sessanta,
settanta,
ottanta,
novanta

Question 5

1 + 1 = 2

Answer 5

uno più uno fa due

Question 6

a hundred and fifty-five

Answer 6

centocinquantacinque

Question 7

seven point five

seven and a half

Answer 7

sette v’irgola cinque

sette e mezzo

Question 8

21, 22, 23, 24, 25, 26,27, 28, 29

Answer 8

ventuno,
ventidue,
ventitré,
ventiquatro,
venticinque,
ventisette,
ventotto,
ventinuvo
(note that before "uno" and "otto" we dropped the final vauel from venti)

Question 9

21 days

Answer 9

ventun giorni

note: final -o from numbers ending in “uno” drop before a noun

Question 10

83

Answer 10

ottantatré

note: -tre has a written accent when combined with another number

Question 11

%

Answer 11

il per cento

note: percentages start with il :
“il trenta per cento” (30%)

Question 12

100,
101,
102,
110,
150

Answer 12

cento,
centouno,
centodue,
centodieci,
centocinquanta

Question 13

200,

500

Answer 13

duecento,
cinquento

note: in plural the ending doesn’t change like with thousands

Question 14

1 000,
1 100
1 500
2 000

Answer 14

mille,
millecento,
millecinquento,
duemilla

Note: mille/a have the regular plural ending change (similar to millione/i but unlike to cento -hundreds-)

Question 15

2 000
5 000
10 000
100 000
500 000

Answer 15

duemilla,
cinuemila,
diecimila,
centomila,
cinuentomila

Note: mille/a have the regular plural ending change (similar to millione/i but unlike to cento -hundreds-)

Question 16

1 000 000
2 000 000
1 000 000 000

Answer 16

un milione,
due milioni,
un miliardo

note:

(1) final -o from numbers ending in “uno” drop before a noun
(2) millione and miliardo have the regular plural ending change (similar to mille/i and unlike cento -hundreds-)

(3) They’re followed by “di” when used alone before a noun:
“un milione di euro”, “cinque milioni di sterline”, “sette miliardi di dollari”…
but “un milione cinquecentomila euro”