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1st Grade Number Sense

Page history last edited by Tim Fahlberg 15 years, 3 months ago

Home > Mathcasts Library > By Grade Level > K-7 >  1st Grade  > 1st Grade Number Sense

 

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 1st Grade Number Sense:  Standards and Practice Problem(s)
VoiceThread
Mathcasts

1NS.1.0 Students understand and use numbers up to 100.

  
1NS.1.1 Count, read, and write whole numbers to 100.
   
1NS.1.2 Compare and order whole numbers to 100 by using the symbols for less than, equal to, or greater than (<, =, >).
   
Ready
1NS.1.3 Represent equivalent forms of the same number through the use of physical models, diagrams, and number expressions (to 20) (e.g., 8 may be represented as 4 + 4, 5 + 3, 2 + 2 + 2 + 2, 10 -2, 11 -3).
   
Ready
1NS.1.4 Count and group object in ones and tens (e.g., three groups of 10 and 4 equals 34, or 30 + 4).
    
Ready
1.5 Identify and know the value of coins and show different combinations of coins that equal the same value.
   
Ready

1NS.2.0 Students demonstrate the meaning of addition and subtraction and use these operations to solve problems.

 
1NS.2.1 Know the addition facts (sums to 20) and the corresponding subtraction facts and commit them to memory.
    
Ready
1NS.2.2 Use the inverse relationship between addition and subtraction to solve problems.
    
Ready
1NS.2.3 Identify one more than, one less than, 10 more than, and 10 less than a given number.
   
Ready
1NS.2.4 Count by 2s, 5s, and 10s to 100.
   
Ready
1NS.2.5 Show the meaning of addition (putting together, increasing) and subtraction (taking away, comparing, finding the difference).
   
Ready
1NS.2.6 Solve addition and subtraction problems with one-and two-digit numbers (e.g., 5 + 58 = __).
   
Ready
1NS.2.7 Find the sum of three one-digit numbers.
   
Ready

 

1NS.3.0 Students use estimation strategies in computation and problem solving that involve numbers that use the ones, tens, and hundreds places.

  
1NS.3.1 Make reasonable estimates when comparing larger or smaller numbers.
    
Ready

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