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Score 9 04-01-11-038-s Name: Date: Subject: Year 4 Maths Sheet: Lattice multiplication Lattice Multiplication Example: Use the lattice method to multiply 45 × 23 1. Arrange 45 and 23 along the top and side of the grid. 2. Multiply 2 × 5. Then multiply 2 × 4. Multiply 3 × 5. Then multiply 3 × 4. Write the answers as shown in the lattice. 3. Add the numbers along each diagonal starting at the right. For the sum 10, write 0. Then add 1 to the sum along the diagonal above. 4. Read the answer: 45 × 23 = 1,035 1 0 4 01 8 1 2 3 5 1 2 0 1 3 5 5 Use the lattice method to work out the sums below. 1) 67 × 74 = _________ 2) 25 × 39 = _________ 3) 12 × 10 = _________ 4) 37 × 23 = _________ 5) 48 × 62 = _________ 6) 78 × 42 = _________ 7) 19 × 35 = _________ 8) 34 × 59 = _________ 9) 93 × 50 = _________ © Primary Leap Ltd. 2016 www.primaryleap.co.uk - Primary Resources