standard_description: Compare two decimals to hundredths by reasoning about their size. Recognize that comparisons are valid only when the two decimals refer to the same whole. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions, e.g., by using a visual model.
Grade 4 expectations in this domain are limited to fractions with denominators 2, 3, 4, 5, 6, 8, 10, 12, and 100.
problem_activity: Problem 1
Below are three angles,
$$\angle A$$
,
$$\angle B$$
and
$$\angle C$$
.
[IMG]
Which angle has the greatest measure? How do you know?
Problem 2
Estimate the measure of each angle in Anchor Task 1.
Using a 180° protractor, find the exact measure of each angle in Anchor Task 1.
Problem 3
Use a 180° protractor to find the measure of each angle in degrees.
{"table": [{"_attributes": {"class": ["table"], "style": "width: 100%;"}, "tbody": [{"tr": [{"td": [{"_attributes": {"style": "vertical-align: top;"}, "ol": [{"_attributes": {"start": "1", "style": "list-style-type: lower-roman;"}, "li": [{"p": [{}]}]}], "p": [{"_attributes": {"style": "margin-left: 40px;"}, "img": [{"_attributes": {"src": "https://d21royfkw9g4l6.cloudfront.net/Qz0c1pghJblJxPPnWMKvDA_8OLHZR.png"}}]}]}, {"_attributes": {"style": "vertical-align: top;"}, "ol": [{"_attributes": {"start": "2", "style": "list-style-type: lower-roman;"}, "li": [{"p": [{}]}]}], "p": [{"_attributes": {"style": "margin-left: 40px;"}, "img": [{"_attributes": {"src": "https://d21royfkw9g4l6.cloudfront.net/RokQx2LZhsF2CTQWAJkzyW_JH4LC6.png"}}]}]}]}, {"td": [{"_attributes": {"style": "vertical-align: top;"}, "ol": [{"_attributes": {"start": "3", "style": "list-style-type: lower-roman;"}, "li": [{"p": [{}]}]}], "p": [{"_attributes": {"style": "margin-left: 40px;"}, "img": [{"_attributes": {"src": "https://d21royfkw9g4l6.cloudfront.net/NLbOmHYZToXkxj9ilDgQH6_DXQEEI.png"}}]}]}, {"_attributes": {"style": "vertical-align: top;"}, "ol": [{"_attributes": {"start": "4", "style": "list-style-type: lower-roman;"}, "li": [{"p": [{}]}]}], "p": [{"_attributes": {"style": "margin-left: 40px;"}, "img": [{"_attributes": {"src": "https://d21royfkw9g4l6.cloudfront.net/hJ5Lr0W5n0ZLLZ0IDJqfdN_5ZB0NT.png"}}]}]}]}]}]}]}
Use a 180° protractor to measure the labeled angles in each figure.
[IMG]


aligns: no