Math Mammoth - Add & Subtract 3

Lessons

• Add and Subtract Whole Hundreds, p. 6-8
• Practice with Whole Hundreds, p. 9-10
• Adding Whole Tens, p. 11-13
• Subtracting Whole Tens, p. 14-15
• Addition/Subtraction Connection, p. 16-18
• Completing the Next Hundred, p. 19-22
• More Practice in Adding and Subtracting Tens, p. 23-24
• Rounding and Estimating, p. 25-28
• Adding Ones, p. 29-31
• Subtracting Ones Mentally, p. 32-34
• Subtracting 2-Digit Numbers Mentally, p. 35-37
• More Practice, p. 38-39
• Adding 3-Digit Numbers in Columns, p. 40-42
• Regrouping 10 Tens as a Hundred, p. 43-46
• Add in Columns: Regrouping Twice, p. 47-50
• Regrouping in Subtraction, p. 51-54
• Subtract in Columns: Regrouping Twice, p. 55-58
• Add and Subtract Both, p. 59-61
• Regroup with Zero Tens, p. 62-64
• Another Way to Subtract, p. 65-66 (SKIP THIS)
• Add and Subtract with Money, p. 67-68
• Review, p. 69-70