Multiplying Multi-Digit Whole Numbers: math test, Grade 4 – download the PDF

1 Mental math / 4 pts

Find each product without a calculator.

1. \(9 \times 70\)
2. \(6 \times 800\)
3. \(50 \times 40\)
4. \(7 \times 3{,}000\)

2 Area model / 3 pts

Use the area model to find \(27 \times 45\). Write the four partial products and the total.

3 4-digit times 1-digit / 3 pts

Use partial products to find \(6{,}138 \times 7\).

4 Two 2-digit numbers / 3 pts

Find \(83 \times 57\). Show your work.

5 Reasonable answer? / 3 pts

Kai says that \(41 \times 29 = 1{,}889\). (a) Estimate the product. (b) Explain why Kai’s answer is not reasonable. (c) Find the correct product.

6 Summer camp / 4 pts

A summer camp buys 18 tents at $64 each and 45 sleeping bags at $29 each. The camp has a budget of $2,500.

1. How much do the tents cost?
2. How much do the sleeping bags cost?
3. What is the total cost?
4. How much of the budget is left?