Lesson: Counting Forward and Backward within 100 Mathematics • First Year of Primary School

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In this lesson, we will learn how to count within 100 in ones from any starting number and complete the missing numbers in a count sequence.

Students will be able to

count forward and backward by ones to 100 using a hundreds chart,
count forward and backward by ones to 100 without using a hundreds chart,
locate numbers that are before, after, or between given numbers,
find missing numbers in a sequence,
solve simple addition and subtraction problems by counting forward or backward using a hundreds chart.