Illustrative Mathematics | v.360 Curriculum

Problem 1

Pre-unit

Color 2 shapes that are triangles.

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Problem 2

Pre-unit

How many do you see?

____________
____________

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Problem 3

Pre-unit

Match the pictures with the expressions.

\(\hspace{1.5cm}6+2\)
\(\hspace{1.5cm}5+3\)

Problem 4

ForLesson 1: Count and Add

How many do you see?

____________
____________

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Problem 5

ForLesson 2: Explore Expressions and Sums

Circle the expression that matches the dots.

2 groups of dots. First group, 4. Second group, 3.

\(2+2\)
\(4+3\)

Problem 6

ForLesson 2: Explore Expressions and Sums

Circle the dots that match the expression: \(5+1\)

2 groups of dots. First group, 5. Second group, 1. — A

2 groups of dots. First group, 4. Second group, 1. — B

Problem 7

ForLesson 3: Add 1 or 2

Find the value of each sum.

\(3 + 1\)
\(3 + 2\)
\(7+2\)
\(7+1\)

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Problem 8

ForLesson 4: More Work with 1 and 2

Find the value of each difference.

\(10 - 1\)
\(10-2\)
\(5-2\)
\(6-1\)
\(8-2\)

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Problem 9

ForLesson 5: Explore Addition and Subtraction

How can you use these dots to show a sum or difference?

Fill in the blanks to show 2 ways.

2 groups of dots. First group, 6. Second group, 3.

\(\underline{\hspace{1.7cm}} + \underline{\hspace{1.7cm}} = \underline{\hspace{1.7cm}}\)

\(\underline{\hspace{1.7cm}} - \underline{\hspace{1.7cm}} = \underline{\hspace{1.7cm}}\)

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Problem 10

Exploration

Materials needed:

Number cards 2–10
2 dot cubes

Directions:

Choose a number card.
Show 2 numbers on the dot cubes that add to make your number.
Can you show another way?

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Problem 11

Exploration

Partner A: Hold up some fingers on each hand.

Partner B: Fill in the blanks to show how many fingers.

\(\underline{\hspace{1.7cm}} + \underline{\hspace{1.7cm}} = \underline{\hspace{1.7cm}}\)

Switch roles and play again.

\(\underline{\hspace{1.7cm}} + \underline{\hspace{1.7cm}} = \underline{\hspace{1.7cm}}\)

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Student Handouts

Add and Subtract within 10

Practice

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

Problem 7

Problem 8

Problem 9

Problem 10

Problem 11