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3. Write the numbers from the smallest to the greatest using a number strip.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

(a) 11, 10, 13, 14, 12

(b) 17, 14, 13, 16, 15

(c) 15, 18, 16, 19, 17

4. Write the numbers from the greatest to the smallest using a number strip.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

(a) 13, 17, 14, 12, 16

(b) 10, 9, 11, 8, 12

(c) 11, 14, 10, 12, 13

ordiNAL Numbers

Look at the picture of a zoo train.

Fox is in the first position.

Rabbit is in the second position. Sixth 9 10 Tenth

Monkey is in the third position. 6 7 8 Ninth

5 Eighth

4 Seventh
3 Fifth
2 Fourth
1
Third

Second

First

Elephant is in the tenth position.

First, second, third, fourth, ..., tenth are ordinal numbers. In short, we represent
them as 1st, 2nd, 3rd, 4th, ..., 10th.

The numbers that tell the position or place of something placed in order are called

ordinal numbers.

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