Calculate the Product: 2¼ × 1⅔ Mixed Number Multiplication

Question

214×123= 2\frac{1}{4}\times1\frac{2}{3}=

Video Solution

Step-by-Step Solution

To solve the problem of multiplying the mixed numbers 214 2\frac{1}{4} and 123 1\frac{2}{3} , we proceed as follows:

  • Step 1: Convert Mixed Numbers to Improper Fractions

    • Convert 214 2\frac{1}{4} to an improper fraction: 214=2×4+14=94 2\frac{1}{4} = \frac{2 \times 4 + 1}{4} = \frac{9}{4}

    • Convert 123 1\frac{2}{3} to an improper fraction: 123=1×3+23=53 1\frac{2}{3} = \frac{1 \times 3 + 2}{3} = \frac{5}{3}

  • Step 2: Multiply the Improper Fractions

  • Now, multiply 94\frac{9}{4} by 53\frac{5}{3}: 94×53=9×54×3=4512 \frac{9}{4} \times \frac{5}{3} = \frac{9 \times 5}{4 \times 3} = \frac{45}{12}

  • Step 3: Simplify the Fraction

  • Simplify 4512\frac{45}{12} by finding the greatest common divisor of 45 and 12, which is 3: 45÷312÷3=154 \frac{45 \div 3}{12 \div 3} = \frac{15}{4}

  • Step 4: Convert Back to a Mixed Number

  • Convert 154\frac{15}{4} into a mixed number: 15÷4=3remainder3 15 \div 4 = 3 \quad \text{remainder} \quad 3 So, 154=334\frac{15}{4} = 3\frac{3}{4}.

Based on the calculations, the product of 214 2\frac{1}{4} and 123 1\frac{2}{3} is 334 3\frac{3}{4} .

Therefore, the solution to the problem is 334 3\frac{3}{4} .

Answer

334 3\frac{3}{4}