Question bank: Sequences: Missing Elements

Dona Maria likes to organize her flowers in vases according to a sequence that follows the logic of colors. She has red, blue, and yellow vases, which she places one after the other in order. The sequence is red, blue, red, yellow, and so on. If she has 4 vases and the last vase she bought was blue, what will be the color of the next vase she will buy following Dona Maria's sequence?

Imagine you have a queue of marbles. Each marble has a number. The first one has the number 1, the second one has the number 2, and so on. Now, some marbles have disappeared and you need to find out their numbers. The numbers of the marbles that are left are: 1, 2, 3, 5, 6, 8, 9. What are the numbers of the marbles that disappeared?

At the school's science fair, the 1st-year students are preparing an exhibition on environmental preservation. They collected data on the amount of A4 paper used each week by each of the 4 school classes for a month. The collected data shows the number of sheets used per week, in ascending order, for the first three weeks of each month. However, for the last week of the month, where the emphasis was on paper recycling, they collected the average number of sheets used in the previous weeks for each class. The student's class, in particular, had the following average: 25 sheets. Based on the collected data, the student needs to identify the correct amount of paper each class used in the last week of the month and complete the sequence with the number of sheets used per week.

Teacher Ana played a game with the numbers from 1 to 10 to see if the students can figure out the missing numbers in the sequence. She wrote down the sequence of numbers: 1, 2, 3, 4, __, 6, __, 8, 9, 10. Help teacher Ana complete the sequence by thinking about which number should go in the blank spaces. Write down the complete sequence, filling in the missing numbers!

In today's class, we learned about sequences, which are sets of things that follow a pattern. It can be a sequence of numbers, like 2, 4, 6, 8, where we always increase by 2, or even a sequence of shapes, like circle, circle, square, circle, square... It's like telling a story with things, but some parts of it are missing! To help João complete the story of the sequences, you need to write down the missing numbers or shapes in the sequences below. Remember to observe the pattern carefully to find out what comes next. Sequence 1: 5, 10, 15, ___, 25, 30, ___. Sequence 2: circle, square, circle, ___, square, circle, ___.