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1.04 Multiplication and division of integers

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Evaluate: $12\times3$12×3

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Evaluate: $3\times\left(-3\right)$3×(3)

Evaluate: $-4\times\left(-11\right)$4×(11)

Evaluate: $6\times12$6×12



Apply and extend previous understandings of multiplication and division and of fractions to multiply and divide integers and other rational numbers.


a. Understand that multiplication is extended from fractions to rational numbers by requiring that operations continue to satisfy the properties of operations, particularly the distributive property, leading to products such as (-1)(-1) = 1 and the rules for multiplying signed numbers. Interpret products of rational numbers by describing real-world contexts


b. Understand that integers can be divided, provided that the divisor is not zero, and every quotient of integers (with non-zero divisor) is a rational number. If p and q are integers, then -(p/q) = (-p)/q = p/(-q). Interpret quotients of rational numbers by describing real-world contexts.

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