You’re being asked to figure out the pattern of the list of numbers and fill in the missing numbers, then read them aloud.
This first question is missing two numbers.

We can deduce the pattern by seeing the distance between our given numbers. That is, how many numbers are between 1 and 3, 7 and 9, 13 and 15. We see that the numbers ascend by two each time. So our missing numbers are 2 more than 3 and 2 more than 9.

cinco / 5, once / 11

You’re being asked to figure out the pattern of the list of numbers and fill in the missing numbers, then read them aloud.
This question is missing three numbers.

To determine the pattern, we’ll find the distance between two adjacent numbers. The first two, 2 and 4, are two whole numbers apart, meaning this is the pattern. So now we just need to find the numbers that are two above 4, two above 8 and two above 12.

seis / 6, diez / 10, catorce / 14

You’re being asked to figure out the pattern of the list of numbers and fill in the missing numbers, then read them aloud.
This question is missing three numbers.

This one should be fairly simple, as the pattern is clearly just ascending by one each time, just like counting normally. We’re just missing the digit between 17 and 19, and the two digits after 19.

dieciocho / 18, veinte / 20, veintiuno / 21

You’re being asked to figure out the pattern of the list of numbers and fill in the missing numbers, then read them aloud.
This question is missing three numbers.

This is our first pattern that has the numbers in a descending order, instead of ascending. We’re moving from 30 – 25, which is descending by 5. If we follow that pattern, we’ll find that there are three missing digits between 25 and 5, which makes sense since we’re missing three numbers.

veinte / 20, quince / 15, diez / 10

We have to figure out the pattern in order to know what numbers to write/say. This one is pretty to easy to figure out, as it descends by 1 every time. We’re only missing two numbers.

diecisiete, catorce

This sequence of numbers ascends by 2 each time and is missing two numbers, the one between 22 and 26 and the one between 26 and 30. Remember to practice writing and saying the numbers.

veinticuatro, veintiocho

This sequence of numbers ascends by 3 each time. We are missing two numbers, the one that falls between 6 and 12 and the one that follows 12.

nueve, quince

This sequence of numbers ascends by 5 each time. We are missing three numbers. The one that falls between 10 and 20, and the two following 20.

quince, veinticinco, treinta