Date: H A PTE R C Name: 6 Multiplication Tables of 2, 5, and 10 Worksheet 1 Multiplying 2: Skip-counting Find the missing numbers in the number pattern. 1. 2, 4, 6, , I add , , to get the next number. Find the missing numbers. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2. 2 fours is groups of . Use skip-counting to find the missing numbers. Example Each child has 2 hands. 0 2, 4, 2 4 6 8 , 4×2= There are hands in all. Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 113 113 3/26/09 5:54:56 PM Name: 3. Date: Each butterfly has 2 wings. 0 2 2, , 4 6 3×2= 4. wings in all. There are 5 boys. Each boy has 2 baseball cards. How many baseball cards do they have in all? 2, , , , 5×2= They have 5. Molly and Sara eat 2 pancakes each. How many pancakes do they eat in all? 2× They eat 114 baseball cards in all. = pancakes in all. I count by 2s. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. There are Chapter 6 Lesson 1 MS_Reteach 2A_Ch06_113-138.indd 114 3/26/09 5:54:58 PM Name: 6. Date: There are 6 children. Each child holds 2 balloons. How many balloons do they hold in all? They hold © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 7. balloons in all. Isabelle uses 2 pieces of bread to make a sandwich. She makes 10 sandwiches. How many pieces of bread does Isabelle use? Isabelle uses pieces of bread. Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 115 115 3/26/09 5:54:59 PM Name: Mrs. Clark has 8 pots. Each pot has 2 handles. How many handles are there in all? There are 9. Benny runs two times around the track every day. How many times does he run around the track in 6 days? Benny runs 116 handles in all. times around the track in 6 days. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 8. Date: Chapter 6 Lesson 1 MS_Reteach 2A_Ch06_113-138.indd 116 3/26/09 5:54:59 PM Name: Date: Worksheet 2 Multiplying 2: Using Dot Paper Use dot paper to solve. Example Each squirrel has 2 acorns. How many acorns do the 2 squirrels have in all? dot paper 1 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2 ×2= The 2 squirrels have acorns in all. Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 117 117 10/21/09 5:30:31 PM Name: 1. Date: Each keychain has 2 keys on it. How many keys do the 3 keychains have in all? 1 2 1 2 3 ×2= 2. keys in all. Andre, Bart, Cedric, and Dorothy each have $2. How much money do they have in all? 1 1 2 3 4 ×$ They have $ 118 =$ in all. 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. The 3 keychains have Chapter 6 Lesson 2 MS_Reteach 2A_Ch06_113-138.indd 118 2/9/10 3:36:25 PM Name: 3. Date: Sharon buys 2 pencils for each of her 8 cousins. How many pencils does Sharon buy in all? 1 2 1 2 3 4 5 6 7 8 × pencils in all. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Sharon buys = Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 119 119 3/26/09 5:55:01 PM Name: Date: Use facts you know to find the missing numbers. Example 6×2=? Start with 5 groups of 2. 1 1 2 2 1 2 3 4 5 6 1 2 3 4 5 5 × 2 = 10 6 groups of 2 is the same as adding 1 group of 2 to 5 groups of 2. 6 × 2 = 5 groups of 2 + group of 2 = 4. 7×2=? 1 1 2 1 2 3 4 5 5 × 2 = 10 2 1 2 3 4 5 6 7 7 × 2 = 5 groups of 2 + groups of 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. = 10 + = 10 + = 120 Chapter 6 Lesson 2 MS_Reteach 2A_Ch06_113-138.indd 120 3/26/09 5:55:01 PM Name: Date: Use facts you know to find the missing numbers. Example 9×2=? Start with 10 groups of 2. 1 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2 3 4 5 6 7 8 9 10 10 × 2 = 20 1 2 1 2 3 4 5 6 7 8 9 9 groups of 2 is the same as subtracting 1 group of 2 from 10 groups of 2. 9 × 2 = 10 groups of 2 – group of 2 = 20 – = Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 121 121 3/26/09 5:55:02 PM Name: 5. Date: 8×2=? 1 2 1 2 3 4 5 6 7 8 9 10 10 × 2 = 20 1 2 1 2 3 4 5 6 7 8 8 × 2 = 10 groups of 2 – groups of 2 = Multiplication Table of 2 1×2=2 2×2=4 3×2=6 4×2=8 5 × 2 = 10 6 × 2 = 12 7 × 2 = 14 8 × 2 = 16 9 × 2 = 18 10 × 2 = 20 122 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. = 20 – Chapter 6 Lesson 2 MS_Reteach 2A_Ch06_113-138.indd 122 3/26/09 5:55:02 PM Name: Date: Use dot paper to find the missing numbers. Example 6×2= 2×6= 1 1 2 1 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2 3 4 5 6 6. 2 3 4 5 6 6×2=2×6 These are related multiplication facts. 8×2= 2×8= 1 1 1 2 3 4 5 6 7 8 2 2 3 4 5 6 7 8 1 2 Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 123 123 3/26/09 5:55:02 PM Name: Date: Use dot paper to find the missing numbers. 7. 9×2= 1 2×9= 1 2 3 4 5 6 7 8 9 1 2 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2 3 4 5 6 7 8 9 2 124 Chapter 6 Lesson 2 MS_Reteach 2A_Ch06_113-138.indd 124 3/26/09 5:55:03 PM Name: Date: Worksheet 3 Multiplying 5: Skip-counting Find the missing numbers in the number pattern. 1. 5, 10, 15, , I add , , to get the next number. Find the missing numbers. 2. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2 fives is groups of . Use skip-counting to find the missing numbers. Example 1 finger stands for 5. 5 5, 10, 10 15 , 20 , Count by 5s. 5, 10, 15, 20, 25. 5×5= The 5 fingers stand for 25 . Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 125 125 10/21/09 5:32:04 PM Name: 3. Date: Barry has 3 bags. Each bag has 5 bagels. How many bagels does Barry have in all? 5, , ×5= Barry has 4. bagels in all. Mrs. Johnson sells 5 crayons in a box. She sells 6 boxes of crayons. How many crayons does Mrs. Johnson sell? ×5= 5. crayons. A farmer has 5 cows in a barn. She has 8 barns. How many cows does she have in all? × She sells 126 = cows in all. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. She sells Chapter 6 Lesson 3 MS_Reteach 2A_Ch06_113-138.indd 126 3/26/09 5:55:09 PM Name: Date: Worksheet 4 Multiplying 5: Using Dot Paper Use dot paper to find the missing numbers. Example Paula has 5 strings. There are 5 beads on each string. How many beads does Paula have in all? 1 2 3 4 5 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2 3 4 5 5×5= Paula 1. has beads in all. Jasmine has 4 boxes. Each box has 5 erasers. How many erasers does Jasmine have in all? 1 2 3 4 5 1 2 3 4 Jasmine has erasers in all. Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 127 127 3/26/09 5:55:10 PM Name: Date: Use short cuts to find the missing numbers. Example 2×5=? One finger stands for 5. Two fingers stand for 10. 2×5= 5×5=? 5×5= 3. 9×5=? 9×5= 128 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 2. Chapter 6 Lesson 4 MS_Reteach 2A_Ch06_113-138.indd 128 3/26/09 5:55:11 PM Name: Date: Multiplication Table of 5 1×5=5 2 × 5 = 10 3 × 5 = 15 4 × 5 = 20 5 × 5 = 25 6 × 5 = 30 7 × 5 = 35 8 × 5 = 40 9 × 5 = 45 10 × 5 = 50 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Use dot paper to find the missing numbers. Example × 1 = × 1 2 3 4 5 = 2 3 1 2 3 4 5 1 2 3 3×5=5×3 These are related multiplication facts. Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 129 129 3/26/09 5:55:12 PM Name: Date: × 4. 1 = 1 2 3 4 5 = 2 3 4 5 6 1 2 3 4 5 × 5. 1 = × 2 3 4 5 1 2 3 4 5 6 7 8 9 10 1 1 2 3 4 5 2 3 4 5 6 = 7 8 9 10 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 1 2 3 4 5 6 130 × Chapter 6 Lesson 4 MS_Reteach 2A_Ch06_113-138.indd 130 3/26/09 5:55:13 PM Name: Date: Worksheet 5 Multiplying 10: Skip-counting and Using Dot Paper Find the missing numbers in the number pattern. 1. , 10, 20, 30, I add , , to get the next number. Find the missing numbers. 2. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 3 tens is groups of . Use skip-counting to find the missing numbers. Example 1 finger stands for 10. 10 10, 20, 20 30 , 40 50 Count by 10s. 10, 20, 30, 40, 50. , 5 × 10 = The 5 fingers stand for . Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 131 131 10/21/09 5:33:14 PM Name: 3. Date: There are 7 bags. Each bag has 10 marbles. How many marbles are there in all? 10, 20, 30, , , , × 10 = There are 4. marbles in all. Jeanette has 5 glass bottles. Each glass bottle has 10 coins. How many coins are there in all? × 10 = 5. coins in all. Pauline puts 10 books on each shelf. Her bookcase has 4 shelves. How many books does Pauline have in all? × Pauline has 132 = books in all. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. There are Chapter 6 Lesson 5 MS_Reteach 2A_Ch06_113-138.indd 132 10/21/09 5:34:10 PM Name: Date: Multiplication Table of 10 1 × 10 = 10 2 × 10 = 20 3 × 10 = 30 4 × 10 = 40 5 × 10 = 50 6 × 10 = 60 7 × 10 = 70 8 × 10 = 80 9 × 10 = 90 10 × 10 = 100 Use dot paper to find the missing numbers. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. Example × 1 = 2 3 4 5 6 × 7 = 1 8 9 10 1 2 3 4 5 5 × 10 = 10 × 5 These are related multiplication facts. 2 3 4 5 1 2 3 4 5 6 7 8 9 10 Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 133 133 3/26/09 5:55:16 PM Name: Date: × 6. 1 = 2 3 1 1 2 3 4 5 6 7 8 9 10 2 3 4 5 6 = 7 8 9 10 1 2 3 1 = × 2 3 4 5 6 1 2 3 4 5 6 7 8 9 10 1 1 2 3 4 5 6 2 3 4 5 6 = 7 8 9 10 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. × 7. 134 × Chapter 6 Lesson 5 MS_Reteach 2A_Ch06_113-138.indd 134 3/26/09 5:55:17 PM Name: Date: Worksheet 6 Divide Using Related Multiplication Facts Find the missing numbers. Use related multiplication facts to help you divide. Example Divide 15 stickers into 5 equal groups. How many stickers are in each group? 5 × 3 = 15 So, 15 ÷ 5 = 3 15 ÷ 5 = ? © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. stickers are in each group. 1. Divide 18 strawberries into 2 equal groups. How many strawberries are in each group? 18 ÷ 2 = ? There are strawberries in each group. Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 135 135 10/21/09 5:37:20 PM Name: Date: Example Divide 40 bookmarks into equal groups. There are 10 bookmarks in each group. How many groups are there? There are 2. groups. Nellie has 45 blueberries. She puts them equally into bowls. She puts 9 blueberries into each bowl. How many bowls are there? 45 ÷ 9 = ? There are 136 4 × 10 = 40 So, 40 ÷ 10 = 4 © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 40 ÷ 10 = ? bowls. Chapter 6 Lesson 6 MS_Reteach 2A_Ch06_113-138.indd 136 8/6/09 2:09:06 PM Name: Date: Use related multiplication facts to find the missing numbers. Example 4×2=8 ×4= ÷2= 3. 9 × 2 = 18 ×9= ÷2= 4. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. 8 × 5 = 40 6 × 10 = 60 ÷ 10 = 7. ÷2= ×8= ÷5= 6. ÷9= ×2= 2 × 5 = 10 ÷5= 5. ÷4= 9 × 10 = 100 ÷ 10 = ÷8= ×6= ÷6= ×9= ÷9= Reteach 2A MS_Reteach 2A_Ch06_113-138.indd 137 137 3/26/09 5:55:20 PM Name: Date: Use related multiplication facts to solve. Example The second grade classroom has 2 fish tanks. There are 20 fish in all. How many fish are in each fish tank? 10 × 2 = 20 So, 20 ÷ 2 = 10 20 ÷ 2 = 8. fish in each fish tank. There are 40 students in a school choir. There are 5 rows in the choir. How many students are in each row? 40 ÷ 5 = students are in each row. 9. A farmer has 14 hens. She puts 2 hens in each coop. How many coops does she have? 14 ÷ 2 = She has 138 coops. © 2009 Marshall Cavendish International (Singapore) Private Limited. Copying is permitted; see page ii. There are Chapter 6 Lesson 6 MS_Reteach 2A_Ch06_113-138.indd 138 8/6/09 2:08:03 PM
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