Ordinal numbers to 100th

Learning Objectives Identify ordinal numbers up to 100th in both word and number form. Correctly write the number form of an ordinal number (e.g., 21st, 32nd, 43rd, 54th). Correctly write the word form of an ordinal number (e.g., twenty-first, thirty-second). Apply the correct suffix (-st, -nd, -rd, -th) to a given number. Identify and use the exceptions for 11th, 12th, and 13th. Use ordinal numbers to describe the position of an object in a sequence up to 100. Solve simple word problems involving order and position. If you are in a race with 100 people, what place do you want to finish in? 🏁 You want to be 1st! Today, we will learn about special numbers called ordinal numbers. These numbers don't tell us 'how many,' but instead tell us the 'order&#03...

TermDefinitionExample Ordinal NumberA number that tells the position or order of something in a list.In the alphabet, 'C' is the third letter. 'Third' and '3rd' are ordinal numbers. Cardinal NumberA number that tells how many of something there are. It's a counting number.There are three cars. 'Three' and '3' are cardinal numbers. SuffixThe letters added to the end of a number to make it an ordinal number.The suffix in '1st' is '-st'. The suffix in '4th' is '-th'. PositionThe specific place where an item is located in a sequence.The red block is in the second position. Number FormWriting an ordinal number using digits and a suffix.The number form for 'twenty-fifth' is '25th'....

The 1, 2, 3 Rule Numbers ending in 1 use '-st'. Numbers ending in 2 use '-nd'. Numbers ending in 3 use '-rd'. Use this for most numbers that end with one, two, or three. For example: 21st (twenty-first), 32nd (thirty-second), 43rd (forty-third). The 'Teen' Exceptions The numbers 11, 12, and 13 ALWAYS use '-th'. Even though they end in 1, 2, and 3, the numbers eleven, twelve, and thirteen are special. They are written as 11th, 12th, and 13th. The General '-th' Rule All other numbers use the suffix '-th'. If a number does not end in 1, 2, or 3 (and is not 11, 12, or 13), it gets a '-th' suffix. For example: 4th, 19th, 50th, 98th. The 'T-Y' Spelling Rule For word form, change...