Chapter 1: Addition and Subtraction
Introduction ……………………………………………………………. 7
Mental Addition ……………………………………………………… 11
Review: Mental Subtraction ……………………………………. 14
More Mental Subtraction ……………………………………….. 17
Ordinal Numbers and Roman Numerals …………………. 20
More Mental Addition ……………………………………………. 23
Mental Subtraction with Three-Digit Numbers ………… 26
Regrouping in Addition …………………………………………… 29
Review: Regrouping in Subtraction …………………………. 33
Regrouping Twice in Subtraction ……………………………. 36
Regrouping Twice in Subtraction, Part 2 …………………. 40
Regrouping with Zero Tens …………………………………….. 43
Regrouping with Zero Tens, Part 2 …………………………. 46
Rounding 2-Digit Numbers to the Nearest Ten ………… 49
Rounding 3-Digit Numbers to the Nearest Ten ………… 51
The Connection with Addition and Subtraction ………. 54
Mileage Chart ………………………………………………………… 58
Order of Operations ……………………………………………….. 60
Graphs …………………………………………………………………… 62
Review Chapter 1 ……………………………………………………. 65
Added extra worksheets for Roman Numerals (4s and 9s IV and IX were tricky) , Borrowing in subtraction, as well as word problems.