human
Recognise and use efficient methods for mental multiplication Tom and Katie are trying to calculate the answer to \( 19 \times 8 \)
Tom does this: \( 20 \times 8-1 \times 8 \)
Katie does this: \( 10 \times 8+9 \times 8 \)
Who is correct? Neither is correct
gpt
Does not correctly apply the distributive property of multiplication