4.NSBT.5

Multiply up to a four-digit number by a one-digit number and multiply a two-digit number by a two-digit number using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using rectangular arrays, area models and/or equations.

Khan Academy Resources

Multiply without regroupingMultiply with regroupingMultiply 2-digit numbersMultiplication and division word problemsUnderstand multiplying by a multiple of 10, 100, and 1000Multiply using partial productsCompare with multiplicationCompare with multiplication word problemsMultiply 2-digits by 1-digit with area modelsMultiply 2-digit numbers with area modelsMulti-step word problems with whole numbersMultiply with partial products (2-digit numbers)Multiplying 10sMultiply 3- and 4-digits by 1-digit with area modelsMultiply 1-digit numbers by 10, 100, and 1000Estimate products (2-digit numbers)Multiply 3- and 4-digits by 1-digit with distributive propertyMultiply 2-digits by 1-digit with distributive propertyMultiply 1-digit numbers by a multiple of 10, 100, and 1000Estimate products (1-digit times 2, 3, and 4-digit)Comparing with multiplicationEstimating with multiplicationMultiplying with area model: 78 x 65Multiplying two 2-digit numbers using partial productsMultiplying 3-digit by 1-digit (regrouping)Multiplying 3-digit by 1-digitEstimating 2-digit multiplicationMultiplying with area model: 16 x 27Multiplying 1-digit numbers by 10, 100, and 1000Multiplying 10sMultiplying 2-digit numbersMultiplying 2-digits by 1-digit with partial productsUsing area model and properties to multiply Multiplying 1-digit numbers by multiples of 10, 100, and 1000Multiplying with area model: 6 x 7981

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