- First, solve the fourth equation: 68 ÷ Robot = 17. This means Robot = 68 ÷ 17 = 4.
- Next, use the second equation: 13 × Robot = Girl. Since Robot = 4, then Girl = 13 × 4 = 52.
- Now, solve the third equation: Girl - Boy = 132 ÷ 4. Since 132 ÷ 4 = 33 and Girl = 52, then 52 - Boy = 33. So, Boy = 52 - 33 = 19.
- Check the first equation: Man + 3 + Boy = 99. With Boy = 19, this becomes Man + 3 + 19 = 99, so Man + 22 = 99. Therefore, Man = 99 - 22 = 77.
- Finally, solve the last equation: Man - Boy × Robot = ?. Substitute the values: 77 - 19 × 4. Following order of operations (multiplication first), 19 × 4 = 76. Then, 77 - 76 = 1.
My Answer: ? = 1
Parent Tip: Review the logic above to help your child master the concept of fourth grade math skills.
