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addition 99
Unit Objective Complete the addition table.
.Complete 81 spaces (9×9) in the addition table by adding 1-digit
numbers, the sum of which is over 10.
.Understand adding 1-digit numbers, the sum of which is over 10,
as the basic concept for adding greater numbers, and apply it to
learn the concept of regrouping numbers.
.Practice working out numbers by finding different results through
different ways of placing the number chips in the addition table.
NCTM Standards
Number and Operations
.Understand the effects of adding and subtracting whole numbers.
.Develop and use strategies for whole-number
computations, with a focus on addition and subtraction.
38 Workbook A-7
addition 99
Unit Objective Complete the addition table.
.Complete 81 spaces (9×9) in the addition table by adding 1-digit
numbers, the sum of which is over 10.
.Understand adding 1-digit numbers, the sum of which is over 10,
as the basic concept for adding greater numbers, and apply it to
learn the concept of regrouping numbers.
.Practice working out numbers by finding different results through
different ways of placing the number chips in the addition table.
NCTM Standards
Number and Operations
.Understand the effects of adding and subtracting whole numbers.
.Develop and use strategies for whole-number
computations, with a focus on addition and subtraction.
38 Workbook A-7
