Chapter 2 Supplemental Homework Resource Name ____________________ Chapter 2 Supplemental Homework Resource Lesson 2.1 Is means equals. Times as many as means the multiplication symbol X. Lesson 2.2 First, multiply the basic fact. 8X2=16 Then, add the two zeros to the product Lesson 2.3 Example: 5 X 8,000 = 40,000 In this lesson, you may have a basic fact that already has a zero. 5X8= 40 You still need to add the remaining three zeros to the product. The product will have 4 zeros. Lesson 2.4 94 is between 90 and 100 so 4 X 90= 360 and 4 X 100= 400 472 rounds to 500

The expanded form of 14 is 10 and 4. 7X10=70 and 7X4= 28. Lesson 2.5 The expanded form of 15 is 10 and 5 6 X 10= 60 6 X 5= 30 60+30= 90 Lesson 2.6 The expanded form of 14 is 10 and 4. 7X10=70 and 7X4= 28. Add the two partial products together 70+28= 98. Lesson 2.7 6 x 400 = 2,400 6 x 10 = 60 6 x 6 = 36 Add 2,400 + 60 +36= $2,496 Lesson 2.8

Lesson 2.10 Lesson 2.11 Lesson 2.12 x 5 15,000 x 7 6 6,300 55 rounds to 60. Estimate: 60 x 2= 120 Multiply the ones. Regroup if necessary. Next, multiply the tens. $23 x 8= 8 x 3= 24 *regroup the 2 tens 8 x20= 160 160+24= 184 Lesson 2.11 3,000 x 5 15,000 900 x 7 6 6,300 Lesson 2.12 Follow the order of operations Put parentheses around multiplication problems. (7x38) + (3x45) - 56= (266 + 135 ) - 56 = 401 -56 = 345 *Remember to multiple first, then add, then subtract.