2nd Grade

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Standards and Practice Problem(s)

 

Note: Click on the hmtoggle_plus0 to open the mathcast and hmtoggle_plus1 to close it.

 

2NS.1.0:

Students understand the relationship between numbers, quantities, and place value in whole numbers up to 1,000.

 

hmtoggle_plus12NS.1.1 Count, read, and write whole numbers to 1,000 and identify the place value for each digit.

 

 

hmtoggle_plus12NS.1.2 Use words, models, and expanded forms (e.g., 45 = 4 tens + 5) to represent numbers (to 1,000).

 

 

hmtoggle_plus12NS.1.3 Order and compare whole numbers to 1,000 by using the symbols <, =, >.

 

 

 

 

2NS.2.0:

Students estimate, calculate, and solve problems involving addition and subtraction of two-and three-digit numbers.

 

hmtoggle_plus12NS.2.1 Understand and use the inverse relationship between addition and subtraction (e.g., an opposite number sentence for 8 + 6 = 14 is 14 - 6 = 8) to solve problems and check solutions.

 

 

hmtoggle_plus12NS.2.2 Find the sum or difference of two whole numbers up to three digits long.

 

 

hmtoggle_plus12NS.2.3 Use mental arithmetic to find the sum or difference of two two-digit numbers.

 

 

 

 

2NS.3.0:

Students model and solve simple problems involving multiplication and division.

 

hmtoggle_plus12NS.3.1 Use repeated addition, arrays, and counting by multiples to do multiplication.

 

 

hmtoggle_plus12NS.3.2 Use repeated subtraction, equal sharing, and forming equal groups with remainders to do division.

 

 

hmtoggle_plus12NS.3.3 Know the multiplication tables of 2s, 5s, and 10s (to "times 10") and commit them to memory.

 

 

 

 

2NS.4.0:

Students understand that fractions and decimals may refer to parts of a set and parts of a whole.

 

hmtoggle_plus12NS.4.1 Recognize, name, and compare unit fractions from 1/12 to 1/2.

 

 

hmtoggle_plus12NS.4.2 Recognize fractions of a whole and parts of a group (e.g., one-fourth of a pie, two-thirds of 15 balls).

 

 

hmtoggle_plus12NS.4.3 Know that when all fractional parts are included, such as four-fourths, the result is equal to the whole and to one.

 

 

 

 

2NS.5.0:

Students model and solve problems by representing, adding, and subtracting amounts of money.

 

hmtoggle_plus12NS.5.1 Solve problems using combinations of coins and bills.

 

 

hmtoggle_plus12NS.5.2 Know and use the decimal notation and the dollar and cent symbols for money.

 

 

 

 

2NS.6.0:

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

 

hmtoggle_plus12NS.6.1 Recognize when an estimate is reasonable in measurements (e.g., closest inch).

 

 

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