Multi-Digit Multiplication — Answer Key
Part A: Multiple Choice
Circle the best answer for each question.
1. A delivery truck makes 215 trips and carries 38 boxes per trip. How many boxes in total?
A) 8,170 boxes
B) 8,070 boxes
C) 7,170 boxes
D) 8,270 boxes
Grade 5 word problem: 215 times 38 equals 8,170, the sum of 1,720 and 6,450 partial products.
2. Which estimate best checks 1,234 times 56?
A) 1,200 times 60 equals 72,000
B) 1,000 times 50 equals 50,000
C) 1,500 times 50 equals 75,000
D) 2,000 times 60 equals 120,000
Grade 5 estimation: 1,200 times 60 equals 72,000, very close to the actual product 69,104.
3. What is the product 3,456 times 21?
A) 72,576
B) 70,576
C) 73,576
D) 71,576
Grade 5 multi-digit multiplication: 3,456 times 21 equals 72,576 by adding 3,456 and 69,120.
4. A stadium has 87 sections with 1,250 seats each. How many seats total?
A) 108,750 seats
B) 107,750 seats
C) 108,500 seats
D) 109,750 seats
Grade 5 word problem: 1,250 times 87 equals 108,750, the sum of partial products 8,750 and 100,000.
Part B: Fill in the Blank
Write the correct answer on each line.
1. A bakery sells 425 cupcakes per day for 28 days. The total cupcakes equal 11900.
Grade 5 word problem: 425 times 28 equals 11,900 because 3,400 plus 8,500 equals 11,900.
2. Rounding 624 to 600 and 47 to 50 gives an estimate of 30000.
Grade 5 estimation: 600 times 50 equals 30,000, a quick check for the actual product 29,328.
3. The product 5,123 times 19 equals 97337.
Grade 5: 5,123 times 19 equals 97,337 by adding 46,107 and 51,230 partial products.
4. If 64 buses each carry 235 students, the total is 15040.
Grade 5 word problem: 235 times 64 equals 15,040, the sum of partial products 940 and 14,100.
5. The product of 2,468 and 35 is 86380.
Grade 5 multi-digit multiplication: 2,468 times 35 equals 86,380 by adding 12,340 and 74,040.