The Number Line with Signed Numbers: Identify Numbers on a Number Line

What number appears at the point marked in red?

Let's pay attention to the 0 point on the number line.

The next number is 4, meaning a jump of 4+

The number after that is 6, meaning a jump of 2+

The number after that is 10, meaning a jump of 4+

Therefore, the next jump in the sequence is 2+ and the exercise will be:

$10+2=12$

12

What number appears at the point marked on the axis in red?

Let's pay attention to the numbers on the axis from right to left:

$-2,-4,-8,\text{?}$

We'll try to find the common denominator.

Note that if we multiply by 2, we'll get the sequence of numbers:

$-2\times2=-4$

$-4\times2=-8$

Therefore, the next operation to find the red point will be:

$-8\times2=-16$

16-

What number appears at the point marked in red?

Let's pay attention to the numbers on the axis from left to right:

$-3,-1.5,0$

We'll try to find the common denominator.

Let's note that if we use the operation 1.5+, we'll reach the sequence of numbers:

$-3+1.5=-1.5$

$-\text{1}.5+1.5=0$

Therefore:

$0+1.5=1.5$

1.5

What number appears at the point marked in red?

Let's pay attention to the numbers on the axis from left to right:

$3,7,11,15$

We'll try to find the common denominator.

Note that if we use the operation +4, we'll reach the sequence of numbers:

$3+4=7$

$7+4=11$

$11+4=15$

Therefore, the red point will be the next exercise:

$-5+4=-1$

1-

What number appears at the point marked in red?

Let's pay attention to the numbers on the axis from left to right:

$-6,-3,0,?,6,9,12,15$

We'll try to find the common denominator.

Note that if we use the operation 3+, we'll reach the sequence of numbers:

$-6+3=-3$

$-3+3=0$

$6+3=9$

$9+3=12$

$12+3=15$

Therefore, the question mark will be the following exercise:

$0+3=3$

3

What number appears at the point marked in red?

Let's pay attention to the numbers on the axis from left to right:

$0,2,3,5,6$

We'll try to find the common pattern.

Note that the difference between 0 and 2 is 2+

The difference between 2 and 3 is 1+

The difference between 3 and 5 is 2+

The difference between 5 and 6 is 1+

Therefore, the next operation is 2+:

$6+2=8$

8

What number appears at the point marked in red?

Let's pay attention to the numbers on the axis from left to right:

$90,30,10$

We'll try to find the common denominator.

Note that if we divide 90 by 3, we get 30

If we divide 30 by 3, we get 10

Therefore, if we divide 10 by 3, we'll get:

$\frac{10}{3}$

$\frac{10}{3}$

What is the number represented by the red dot on the axis?

Let's pay attention to the 0 point on the number line.

The next number is 2, meaning a jump of 2+

The number after that is 4, meaning another jump of 2+

So we will continue the sequence in the following way until we reach the red point:

$4+2=6$

$6+2=8$

$8+2=10$

$10$