Today I will use objects to solve comparing word problems that involve smaller unknowns.
Vocabulary
Notes
Compare Smaller Unknown: “More” Version Word Problems: There are 3 more boys than girls. There are 9 boys. How many girls are there? 9—3=V
Unknown
Solve for the unknown: 9 — 3 = 6 V=6 This problem can also be solved as a missing addend problem. V+3=9 Compare Smaller V=6 Unknown: “Fewer” Version Word Problems: There are 4 fewer basketballs than jump ropes. There are 10 jump ropes. How many basketballs are there? 10 — 4 = W
Unknown
Solve for the unknown: 10 — 4 = 6 W=6 This problem can also be solved as a missing addend problem.
Directions: Solve for the unknown in the following problems.
1. There are 5 fewer markers than crayons. There are 6 crayons. How many markers are there?
2. Billy has 2 more folders than Mia. Billy has 12 folders. How many folders does Mia have?
*MP3: Do you agree/disagree with what
said?
*MP6: How do you know your answers are correct/reasonable?
Recap today’s lesson with one or more of the following MP questions: MP2: What math symbol did you use today? MP6: How did you know your answers were correct? MP7: What steps helped you solve the problems?