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Unit 7 - Lesson 1 - Grade 2: Illustrative Mathematics
By Formative Library
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Last updated about 1 year ago
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Instructions
Lesson: Compare, Count on, and Count Back
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Cool Down: Subtract and Count
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Grade 2 Unit 7
Lesson 1: Compare, Count on, and Count Back
CC BY 2021 Illustrative Mathematics®
Grade 2 Unit 7
Lesson 1: Compare, Count on, and Count Back
CC BY 2021 Illustrative Mathematics®
Number Talk: Count Back (Warm Up)
Find the value of each expression mentally.
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Notice the Difference
Tyler and Elena were asked to find the value of 81 - 79. Their work is shown.
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Question 7
7.
Locate and label 203 and 198 on the number line.
visibility
View drawing
Question 8
8.
Compare using >, <, or =.
203__________198
Question 9
9.
Find the value of 203 - 198.
Show your thinking.
visibility
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Question 10
10.
Locate and label 673 and 680 on the number line.
visibility
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Question 11
11.
Compare using >, <, or =.
673__________680
Question 12
12.
Find the value of 680 - 673. Show your thinking.
visibility
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Question 13
13.
Locate and label 501 and 499 on the number line.
visibility
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Question 14
14.
Find the value of 501 - 499.
Show your thinking.
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Question 15
15.
Find the value of 400 - 396.
Show your thinking.
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What’s the Big Difference?
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Question 24
24.
Locate and label 562 and 559 on the number line.
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Question 25
25.
Find the value of 562 - 559.
Show your thinking.
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Question 26
26.
Complete the list of numbers to show counting on by 100.
552, _______, _______, 852, 952
Question 27
27.
Explain how you know your list shows counting on by 100 and not counting on by 10.
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Question 1
1.
Question 2
2.
Question 3
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Question 4
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Question 5
5.
What do you notice?
Question 6
6.
What do you wonder?
Question 16
16.
Fill in the missing numbers.
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Question 17
17.
Question 18
18.
Fill in the missing numbers.
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Question 19
19.
Question 20
20.
Fill in the missing numbers.
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Question 21
21.
Question 22
22.
Fill in the missing numbers to show counting on by 10.
739, 749, _______, 769, _______
Question 23
23.
Explain how you can tell your numbers show counting on by 10 and not counting on by 100.
visibility
View drawing
Does this number line show counting on by 10 or counting on by 100?
counting on by 10
counting on by 100
Does this number line show counting on by 10 or counting on by 100?
counting on by 10
counting on by 100
Does this number line show counting on by 10 or counting on by 100?
counting on by 10
counting on by 100