Name. Date. Extra Practice for Quiz #6. Lesson 8: Estimating Quotients. 1. Write
the division fact that helps you estimate each quotient. a) 47 ÷ 7 b) 33 ÷ 5 c) 55 ÷
...
Name Master 8.34
Date
Extra Practice for Quiz #6
Lesson 8: Estimating Quotients 1. Write the division fact that helps you estimate each quotient. a) 47 ÷ 7
b) 33 ÷ 5
c) 55 ÷ 9
d) 28 ÷ 6
e) 62 ÷ 8
2. Write the multiplication fact that helps you estimate each quotient. a) 67 ÷ 9
b) 51 ÷ 8
c) 43 ÷ 7
d) 38 ÷ 6
e) 23 ÷ 5
3. Estimate to find which quotient is greater. 48 ÷ 7 or 47 ÷ 8 4. Robbi has 43 flowers to plant. He has 6 pots. Robbi wants to put 8 flowers in each pot. Can he do this? Explain.
Lesson 9: Division with Remainders 1. Divide. a) 19 ÷ 2
b) 37 ÷ 5
c) 24 ÷ 6
d) 40 ÷ 9
e) 35 ÷ 8
f) 61 ÷ 7
2. Rabia is making gift bags for a party. She has 48 items. Rabia wants to put 5 items in each bag. How many gifts bags can she make? 3. Each car on a Ferris wheel can hold 4 people. There are 34 people in line. How many cars are needed for everyone to get on?
Name Master 8.35
Date
Extra Practice 5
Lesson 10: Using Base Ten Blocks to Divide Use Base Ten Blocks when they help. 1. Divide. a) 99 ÷ 2
b) 87 ÷ 4
c) 81 ÷ 3
d) 85 ÷ 6
e) 99 ÷ 9
f) 94 ÷ 7
2. A model-car case holds 64 cars. Four cars fit in each row. How many rows are in the case? 3. Bottles are packaged 7 to a carton. How many cartons are needed for 79 bottles?
Lesson 11: Another Strategy for Division Use Base Ten Blocks when they help. 1. Divide. a) 95 ÷ 4
b) 91 ÷ 7
c) 90 ÷ 8
d) 93 ÷ 5
b) 81 ÷ 3
c) 84 ÷ 5
d) 82 ÷ 4
2. Divide. a) 83 ÷ 2
3. Find 2 division statements that have a quotient greater than 20. a) 76 ÷ 4
b) 80 ÷ 3
c) 99 ÷ 7
d) 47 ÷ 2
e) 77 ÷ 5
f) 94 ÷ 6
g) 88 ÷ 5
h) 74 ÷ 2
4. How many different 2-digit numbers can you find that have remainder 1 when they are divided by 4? List the numbers. What strategy did you use to find them?
Name Master 8.36a
Date
Extra Practice Sample Solutions
Extra Practice 1 – Master 8.31 Lesson 1: Exploring Multiplication Patterns 1. a) 30, 300, 3000 b) 27, 270, 2700 c) 56, 560, 5600 2. a) 2000 b) 5400 c) 560 d) 600 e) 600 f) 800 3. 250 blocks
× 16 17 18 19
6 96 102 108 114
7 112 119 126 133
8 128 136 144 152
9 144 153 162 171
Lesson 7: Multiplying a 3-Digit Number by a 1-Digit Number 1. The product of 5 × 299 is 5 less than the product of 5 × 300. The product of 5 × 301 is 5 more than the product of 5 × 300. a) 1500 b) 1495 c) 1505 2. a) 256 b) 1536
Lesson 2: Estimating Products 1. Estimates may vary. a) 420 b) 240 c) 150 2. 6 × 30 = 180, about 180 days 3. 6 × 67
Extra Practice 2 – Master 8.32 Lesson 3: Using Models to Multiply 1. a) 111 b) 140 c) 297 d) 301 e) 200 f) 711 2. 168 pencil crayons 3. 34: because there is one more group of 34 in 8 × 34 than there is in 7 × 34
Lesson 5: Other Strategies for Multiplication 1. a) 83 × 5 = (80 × 5) + (3 × 5) b) 34 × 9 = (30 × 9) + (4 × 9) c) 27 × 3 = (20 × 3) + (7 × 3) 2. a) 135 b) 488 c) 70 3. 216
3.
Extra Practice 4 – Master 8.34 Lesson 8: Estimating Quotients 1. Facts and estimates may vary. a) 49 ÷ 7 = 7 b) 35 ÷ 5 = 7 c) 54 ÷ 9 = 6 d) 30 ÷ 6 = 5 e) 64 ÷ 8 = 8 2. Facts and estimates may vary. a) 7: 7 × 9 = 63 b) 6: 6 × 8 = 48 c) 6: 6 × 7 = 42 d) 6: 6 × 6 = 36 e) 5: 5 × 5 = 25 3. 48 ÷ 7 is greater 4. No, 43 ÷ 8 = 5 R3; Robbi can only fill 5 pots with 8 flowers in each.
Lesson 9: Division with Remainders d) 312
Extra Practice 3 – Master 8.33
1. a) 9 R1 b) 7 R2 d) 4 R4 e) 4 R3 2. 9 (with 3 items left over) 3. 9
Lesson 6: Using Patterns to Multiply
Extra Practice 5 – Master 8.35
1. The first factors increase by 1 each time. All the second factors are the same. The hundreds digit and the ones digit in the products are the same as the number multiplied by 101. a) 303 b) 404 c) 505 d) 606 e) 707 f) 808 2. Explanations may vary. For example: There is a pattern in the ones digits of multiples of 5. They alternate between 0 and 5. a) 5 b) 0
c) 4 f) 8 R5
Lesson 10: Using Base Ten Blocks to Divide 1. a) 49 R1 d) 14 R1 2. 16 rows 3. 12 cartons
