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Lattice Multiplication Practice

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Lattice Multiplication Practice

Use lattice multiplication to solve the problems. For each lattice, write one digit in each triangle, add along the diagonals from right to left, and regroup when a diagonal total is 10 or more. Show your work in the drawing boxes.

Build your lattice

Set up each lattice with the digits of the first factor across the top and the digits of the second factor down the side.

1.A food truck packs 23 snack bags in each crate. It loads 15 crates. Use lattice multiplication to find how many snack bags it has.

Draw and complete a 2-digit by 2-digit lattice for 23 × 15.

2.A game store receives 46 boxes with 32 cards in each box. Use lattice multiplication to calculate the total number of cards.

Draw and complete a 2-digit by 2-digit lattice for 46 × 32.

3.Choose the correct product for 27 × 14. A. 378 B. 368 C. 348 D. 408

A. 378
B. 368
C. 348
D. 408

4.A wildlife center prepares 105 snack portions for each of 4 days. Use a lattice with three columns and one row to find how many portions it prepares altogether.

Sketch a 3-column by 1-row lattice for 105 × 4. Remember to include the zero in 105.

5.True or false: In lattice multiplication, the digits of each partial product are placed in the correct triangles before the diagonal sums are added.

TrueFalse

6.A theater has 48 rows with 36 seats in each row. Use lattice multiplication to find the total number of seats.

Draw and complete a 2-digit by 2-digit lattice for 48 × 36.

7.Fill in the blank: The first step in solving 34 × 12 with a lattice is to multiply each top digit by each side digit and write each two-digit product in the .

8.A craft shop orders 79 bundles of 88 beads. Use lattice multiplication to work out the number of beads. Check whether your answer is reasonable by estimating with 80 × 90.

Draw and complete a 2-digit by 2-digit lattice for 79 × 88. Use the space below to show your estimate too.

9.Explain how adding the lattice diagonals helps you keep the place values organized when multiplying 123 × 47. Then give the product.