Chapter 2 Resource Masters - Macmillan/McGraw-Hill

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036_040_C02L7_105801.indd Page 38 5/10/10 4:23:33 PM s-087 /Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C02_... 036_040_C02L7_105801.indd Page 39 5/10/10 4:23:34 PM s-087 /Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C02_... Name Name 2AF1.1 Problem-Solving Practice Add Three Numbers 2-7 2AF1.1 Homework Practice Add Three Numbers 2-7 Chapter Resources Complete the number sentence. Find each sum. Find each sum. 1. The zoo has 5 black bears, 5 brown bears, and 2 polar bears. How many bears are at the zoo? 5 + 5 + 2 = 12 bears 1. 6 6 3 7 6 5 2 3 4 4 + 4 + 8 + 9 + 3 + 5 15 16 15 14 15 Answers (Lesson 2-7) 2. In the baby zoo, 2 cubs are playing, 3 cubs are sleeping, and 3 cubs are eating. How many cubs are at the baby zoo? 2 + 3 + 3 = 8 cubs 2. 1 3 7 8 6 9 3 6 4 4 + 4 + 0 + 6 + 2 + 0 14 6 19 14 10 3. Ellie feeds 3 lambs and 4 goats. Tom feeds 7 ducks. How many animals did they feed in all. 3 + 4 + 7 = 14 animals 3. 7 6 4 9 6 3 1 2 8 6 + 5 + 6 + 6 + 1 + 6 15 13 12 18 18 4. Six seals are on the high rocks. Four seals and three seagulls are on the low rocks. Five seals are in the water. How many seals are there in all? 6 + 4 + 5 = 15 seals 5. Eric draws one lion, six birds, one tree, two houses, and six deer. How many animals does he draw altogether? 1 + 6 + 6 = 13 animals 6. There are 9 boys, 3 teachers, 2 dogs, and 7 girls watching the water show. How many people are watching the show in all? 9 + 3 + 7 = 19 people py g p 4. 7 6 8 7 7 3 1 4 8 6 + 3 + 6 + 2 + 2 + 3 13 13 14 17 16 Grade 2 A18 Chapter 2 Solve. 6. The doctor’s office has fish tanks. Five of the fish are guppies. Six fish are angel fish. Eight fish are mollies. How many fish in all? 19 fish 5. Benji has 6 fish. TJ has 7 fish and 3 dogs. Max has 4 fish. How many fish are there? 17 fish Grade 2 39 Chapter 2 Grade 2 38 Chapter 2 Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Copyright © Macmillan/McGraw-Hill, a division of The McGraw-Hill Companies, Inc. 036_040_C02L7_105801.indd Page 40 5/10/10 4:23:34 PM s-087 /Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C02_... 041_045_C02L8_105801.indd Page 41 5/8/10 5:40:38 PM u-s073 /Volumes/108/GO00577/MathConnects_CA_CRM_10/Ancilliary/Application_Files/C02_... Name 2-8 Name 2MR1.1, 2AF1.1 Reteach (1) 2AF1.1 Problem-Solving Investigation: Choose a Strategy Enrich Finish Line 2-7 Chapter Resources 1. Jen: It takes me 10 minutes to clean my room. It takes me 2 minutes to brush my teeth. It takes me 5 minutes to change my clothes. How long will it take me to get ready for bed? How fast can you add numbers in your head? Answers (Lessons 2-7 and 2-8) Choose a strategy to solve. Write the subtotals in the squares. See how quickly you can find the sums. What do 1 know? First step takes 10 minutes. Understand Step 1 1. 2 + 2 + 1 = 5 + 6 = 11 Next step takes 2 minutes. Last step takes 5 minutes. 2. 1 + 1 + 1 + 7 = 10 + 9 = 19 What do I need to find? How much time in all will it take? 3. 3 + 3 + 1 = 7 + 8 = 15 Copyright © Macmillan/McGraw Hill, a division of The McGraw Hill Companies, Inc. Grade 2 A19 Chapter 2 How will I find how much time? Step 2 Plan 4. 4 + 1 + 1 + 1 = 7 + 10 = 17 I can draw a picture . 5. 2 + 8 + 5 = 15 + 5 = 20 Draw a picture. Step 1 Step 2 Step 3 Room Teeth Change Step 3 Solve 6. 6 + 1 + 1 + 1 + 1 = 10 + 4 = 14 X X X X X X X X X X X X X X X X X 7. Which answer is the greatest? 20 Jen will take 17 minutes. Step 4 Did I draw a picture showing three Check parts? yes Does my answer make sense? yes 8. Arrange the answers in order from least to greatest. 11 , 14 , 15 , 17 , 19 , 20 Grade 2 41 Chapter 2 Grade 2 40 Chapter 2 Answers
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Chapter 2 Resource Masters - Macmillan/McGraw-Hill

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