3. Working Out
4x5=20
20-1=19
OR
20÷5=4
20-1=19
Friday, 1 February, 13
4. Word Form
The operations we used were multiplication
or division and subtraction
First you have to multiply 4 and 5 to find the
lcm, also known as lowest common multiple
The multiple between 4 and 5 is twenty
20 subtract 1 is 19
The answer is 19
Friday, 1 February, 13