Instructions: 1. Cross off 1. 2. Encircle 2 and cross off all multiples of 2. 3. Encircle 3 and cross off all multiples of 3. 4. Encircle 5 and cross off all multiples of 5. 5. Encircle 7 and cross off all multiples of 7. 6. Encircle all the remaining numbers that were not crossed off. 7. How many numbers were encircled?
