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Algebraic Reasoning—1.5.E Also 1.5.DMATHEMATICAL PROCESSES1.1.C, 1.1.G
Use to show taking from, or separating. Draw to show your work.
Model Taking From5.2How can you model taking from, or separating from, a group?
FOR THE TEACHER • Read the following problem. Have children use connecting cubes to model the problem, and draw to show their work. There are 9 butterflies. 2 butterflies fly away. How many butterflies are there now?
HANDS ON
Are there more than or fewer than 9 butterflies now?
ny1. 8 dogs 3 dogs run away. 2. 6 frogs 4 frogs hop away.
Use to show taking from, or separating. Draw the . Circle the part you take away, or separate, from the group. Then cross it out. Write the difference.
Use to show taking from, or separating. Draw the . Circle the part you take away, or separate, from the group. Then cross it out. Write the difference.
5. There are 8 bunnies. 2 bunnies hop away. How many bunnies are there now?
6. Kelly sees some fish at the pet shop. A man buys 2 fish. A boy buys 4 fish. Now there are 3 fish. How many fish did Kelly see at first?
7. Multi-Step There are 6 boys playing soccer. 3 boys go home. Then 1 more boy goes home. How many boys are there now?
TAKE HOME ACTIVITY • Use pennies or other small objects of the same kind to model a subtraction situation for numbers within 10. Ask your child to write the subtraction sentence for it. Then switch roles and repeat the activity.
Choose the correct answer.
8. There are 6 ants. 3 crawl away. How many ants are there now?
3 2 9
9. There are 7 kittens. 2 run away. How many kittens are there now?
4 2 5
10. Use Tools There are 8 cows. 2 cows walk away. Then 1 more cow walks away. How many cows are there now?