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Number Line Identification

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Number Line Identification

Each number line is divided into equal steps. Read the labelled ends, count the steps, then identify the marked number. Use the clues in the number-line diagrams.

Warm-up: Count the steps

A robot is travelling along each number line. The ● shows where it stopped.

1.The robot starts at 0. Each equal step adds 1. What number is marked? Number line: 0 to 10, step 1.

2.This line counts in twos. The robot stops at the fourth tick after 10. What number is marked? Number line: 10 to 20, step 2.

3.A number line runs from 0 to 50 in equal steps of 5. The marker is at the seventh tick after 0. Which number does it show?

Place-value mission

Now the steps represent tens or hundreds. Use the interval size to work out the value of each tick.

4.Each tick increases by 10. The marker is at the fifth tick after 30. What number is marked?

5.A scale goes from 200 to 1,000 in equal jumps of 100. Which number is at the sixth tick after 200?

6.The line runs from 3,000 to 4,000 and has 10 equal intervals. The marker is on the third interval after 3,000. Identify the number.

7.A number line is labelled 4,500 at the left and 5,000 at the right. There are 5 equal intervals. What number is the marker at the second interval after 4,500?

Crack the number-line code

Finish each challenge by thinking carefully about the intervals and place value.

8.A marker sits halfway between 60 and 80 on a number line. What number is it?

9.The scale starts at 0 and ends at 1,000, with 10 equal intervals. A marker is on the eighth tick. Write the number and state how many hundreds it represents.

10.A number line goes from 25 to 45 in equal steps of 2. One tick is missing its label. What number belongs at the unlabeled tick?

11.A delivery counter is showing numbers between 5,000 and 6,000. Its 10 equal intervals are marked in hundreds. The pointer is one tick before 6,000. What number is the counter showing?