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 Calculation, Positive and Negative Numbers 50 Flashcards |
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Positive numbers are defined as numbers that are ___ than zero. |
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Greater  |
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The process of moving from positive to negative numbers on a number line is referred to as ___ zero. |
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Bridging  |
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True or False: The difference between two temperatures can only involve positive numbers. |
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False. The difference can involve both positive and negative numbers.  |
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Fill in the blank: To calculate 4 - 5, you can express it as 4 - 4 - ___ = -1. |
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5  |
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Riddle: I can be added or subtracted, but I am less than nothing. What am I? |
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A negative number  |
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What is the result of the calculation 5 - 9? |
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-4  |
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Fill in the blank: When calculating 4 - 5, we go ___ zero to find the answer. |
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Below  |
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Using number facts, calculate: 9 - 5 equals ___ when bridging zero. |
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4  |
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What is the process of estimating in mathematics, and why is it useful? |
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EstimatingThe Process of Estimating in Mathematics
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Fill in the blank: Regrouping or reordering numbers can simplify ___ during addition. |
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Calculations  |
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True or False: Subtraction must always follow the order of the numbers as presented in a problem. |
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False. Subtraction can be simplified by regrouping the numbers.  |
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What is the result of the operation sequence: Start with 4,653, add 3,000, subtract 499, subtract 2,486, and then add 32? |
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The final result is 4,700.  |
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Riddle: I am an operation that helps you guess a number without calculating it exactly. What am I? |
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Estimation  |
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What is the significance of mental calculations in mathematics? |
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Mental CalculationsThe Significance of Mental Calculations in Mathematics
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What is the role of inverse operations in solving missing number problems? |
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Inverse OperationsThe Role of Inverse Operations in Missing Number Problems
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Fill in the blank: The distributive law allows us to regroup numbers to simplify ___ . |
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Multiplication  |
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True or False: The commutative law can change the order of factors in a multiplication equation. |
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True  |
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Riddle: I can help you find unknown values by using known quantities, often represented by symbols. What am I? |
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An equation  |
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If $20 - $2 = $18 represents the total cost for three trucks, what is the cost of one truck? |
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$6  |
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Using the distributive law, simplify: 19 × 5. |
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95  |
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What mathematical principle is used to relate known values to deduce multiple unknowns? |
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Related facts or properties of operations  |
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Fill in the blank: The expression 46 × 2 × 5 can be simplified using the commutative law to ___ . |
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460  |
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True or False: The equation $15 - $6 = $9 shows the cost of a model airplane derived from the truck's cost. |
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True  |
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What is the purpose of using symbols in number sentences for missing number problems? |
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Symbols Represent UnknownsThe Purpose of Symbols in Number Sentences
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What is the role of estimation in multiplication? |
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EstimationThe Role of Estimation in Multiplication
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Completed! Keep practicing to master all of them. |
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