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Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 Subtraction with Regrouping  Start in the ones column with the top number and ask, “Is the number greater or equal to the number below?”  If your answer is “yes”, then begin subtracting. H TO 245 - 124 121 Chapter 7 Lesson 5

Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 Subtraction with Regrouping  If your answer is “No”, then regroup the tens to add to the ones. H T O 2 8 3 - 1 5 4 * Always ask yourself, “Do I need to regroup?” 7 13 921 10 ones plus 3 ones Chapter 7 Lesson 5

Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 Subtraction with Regrouping  Check by addition H T O 2 8 3 - 1 5 4 1 13 921 Chapter 7 Lesson 5 154 129 + 382 7

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Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 Compare Money Amounts  Line up the values in vertical form and compare the digits to find which one has the greatest value. 51¢ 28¢ Chapter 11 Lesson 1 51¢ is greater than 28¢ 51¢ 28¢ >

Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 Make Change  To make change, set up the money amounts in a subtraction problem. For example: You pay 30 cents. 30 - 27 Chapter 11 Lesson 6 10 2 The change is 3 cents. The toy costs 27 cents. 3

Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 What Are Fractions? A fraction is a number that represents a part of something. 3 8 Numerator - the top number – the parts you are talking about – 3 parts are shaded Denominator – the bottom number – the number of equal parts in one whole – in this circle, there are 8 equal parts in one whole Say: three eighths

Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 Fractions Are Shown In Different Ways of the balls are footballsof each figure is shaded 1 0 Part of a Group Part of a Whole On a Number Line

Copyright ©, Long Beach Unified School District. All rights reserved. - Grade 2 Compare Unit Fractions As the denominator gets larger, what do you notice about the size of the unit fraction? A larger denominator results in a smaller unit fraction! A unit fraction has a 1 in the numerator.

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