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Remarks
Instructional focus should be placed on estimation through mental computation prior to written calculations.
Students should be able to represent numbers with flexibility. For instance, 947 can be thought of as 9 hundreds 4 tens 7 ones, or as 94 tens 7 ones, or as 8 hundreds 14 tens 7 ones.
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Item Type(s):
This benchmark may be assessed using:
MC
item(s)
- Clarification :
Students will represent, identify, compare, and/or order numbers through the hundred thousands place in real-world contexts.
Students will compute sums and differences of numbers through the hundred thousands.
Students may use some of the following estimation strategies: chunking, using a reference, unitizing, benchmarks, clustering, reasonableness, compatible numbers, grouping, rounding, etc., when representing and computing numbers through the hundred thousands. - Content Limits :
Numbers may be represented flexibly; for example: 947 can be thought of as 9 hundreds, 4 tens, and 7 ones; 94 tens and 7 ones; or 8 hundreds, 14 tens, and 7 ones.Items may include the inequality symbols (>, <, =, ).
Items will not require the estimation strategy to be named.
Front-end estimation will not be an acceptable estimation strategy.
Decimals may be used in the context of money that estimate to a whole dollar.
- Stimulus Attributes :
Items should be set in a real-world context. - Response Attributes :
Responses may include actual calculations, estimates, or ranges of numbers.
- Test Item #: Sample Item 1
- Question: Ms. Tanaka is ordering calendars for the students at 4 elementary schools. The table below shows the number of students at each of the schools.
STUDENTS IN ELEMENTARY SCHOOLS
Which is the best estimate of the total number of calendars Ms. Tanaka needs to order for all 4 schools?Name of SchoolNumber of StudentsGreendale1,789Jones Park1,032Shady River2,115Wakefield1,992 - Difficulty: N/A
- Type: MC: Multiple Choice
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