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 3rd Grade Number Sense:  Standards and Practice Problem(s) VoiceThread Mathcasts 3NS.1.0 Students understand the place value of whole numbers: 3NS.1.1 Count, read, and write whole numbers to 10,000. View full-sized mathcast 3NS1-1  Ready 3NS.1.2 Compare and order whole numbers to 10,000. Full-sized mathcast   3NS1-2  Ready 3NS.1.3 Identify the place value for each digit in numbers to 10,000. 3NS1-3  Ready 3NS.1.4 Round off numbers to 10,000 to the nearest ten, hundred, and thousand. 3NS1-4  Ready 3NS.1.5 Use expanded notation to represent numbers (e.g., 3,206 = 3,000 + 200 + 6). 3NS1-5  Ready 3NS.2.0 Students calculate and solve problems involving addition, subtraction, multiplication, and division 3NS.2.1 Find the sum or difference of two whole numbers between 0 and 10,000. 3NS2-1  Ready 3NS.2.2 Memorize to automaticity the multiplication table for numbers between 1 and 10. 3NS2-2  Ready 3NS.2.3 Use the inverse relationship of multiplication and division to compute and check results. 3NS2-3  Ready 3NS.2.4 Solve simple problems involving multiplication of multidigit numbers by one-digit numbers (3,671 x 3 = __). 3NS2-4  Ready 3NS.2.5 Solve division problems in which a multidigit number is evenly divided by a one-digit number (135 ÷ 5 = __). 3NS2-5  Ready 3NS.2.6 Understand the special properties of 0 and 1 in multiplication and division. 3NS2-6  Ready 3NS.2.7 Determine the unit cost when given the total cost and number of units. 3NS2-7  Ready 3NS.2.8 Solve problems that require two or more of the skills mentioned above. 3NS2-8  Ready 3NS.3.0 Students understand the relationship between whole numbers, simple fractions, and decimals 3NS.3.1 Compare fractions represented by drawings or concrete materials to show equivalency and to add and subtract simple fractions in context (e.g., 1/2 of a pizza is the same amount as 2/4 of another pizza that is the same size; show that 3/8 is larger than 1/4). 3NS3-1  Ready 3NS.3.2 Add and subtract simple fractions (e.g., determine that 1/8 + 3/8 is the same as 1/2). 3NS3-2  Ready 3NS.3.3 Solve problems involving addition, subtraction, multiplication, and division of money amounts in decimal notation and multiply and divide money amounts in decimal notation by using whole-number multipliers and divisors. 3NS3-3  Ready 3NS.3.4 Know and understand that fractions and decimals are two different representations of the same concept (e.g., 50 cents is 1/2 of a dollar, 75 cents is 3/4 of a dollar). Ready

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