Mathematics
First Grade Curriculum
Chapter 13, Addition and Subtraction to 40
Children have learned counting skills as well as basic operations in adding and subtracting numbers to 40. Children understand the strategy of making a ten as well as the purpose of place value charts. Children can compare and order numbers to 40 based on their understanding of each 2 digit number being made up of tens and ones. Children have encountered number patterns with numbers up to 40. The place value chart enables children to make comparisons between two or more numbers, when tens are different or when tens are equal. In being able to compare two numbers, children apply this knowledge when they order numbers in ascending or descending order. With children familiar with the counting, comparing and ordering of numbers to 40, they are then able to identify the pattern within a number pattern.
This week children will learn addition and regrouping, addition without regrouping, subtraction without regrouping, subtraction with regrouping, adding three numbers, and real-world problems using addition and subtraction. They will create and solve one-step story and picture problems using basic addition facts with sums to 18 or less and the corresponding subtraction facts. They will show an understanding of equality using the equal sign and much more.
This builds the foundation that children will rely upon when they learn about numbers to 100 in future chapters.
Chapter 13, Addition and Subtraction to 40
Children have learned counting skills as well as basic operations in adding and subtracting numbers to 40. Children understand the strategy of making a ten as well as the purpose of place value charts. Children can compare and order numbers to 40 based on their understanding of each 2 digit number being made up of tens and ones. Children have encountered number patterns with numbers up to 40. The place value chart enables children to make comparisons between two or more numbers, when tens are different or when tens are equal. In being able to compare two numbers, children apply this knowledge when they order numbers in ascending or descending order. With children familiar with the counting, comparing and ordering of numbers to 40, they are then able to identify the pattern within a number pattern.
This week children will learn addition and regrouping, addition without regrouping, subtraction without regrouping, subtraction with regrouping, adding three numbers, and real-world problems using addition and subtraction. They will create and solve one-step story and picture problems using basic addition facts with sums to 18 or less and the corresponding subtraction facts. They will show an understanding of equality using the equal sign and much more.
This builds the foundation that children will rely upon when they learn about numbers to 100 in future chapters.