Use The Skip-Counting Cluster Method – Click here to read the strategy
1. Maya is visiting the Martian Barn where 12 space-frogs are jumping. If she circles them in groups of 2, how many groups will she have?
A) 4 groups
B) 6 groups
C) 5 groups
D) 12 groups
2. There are 15 tiny space-crickets chirping in the asteroid field. Maya circles them in groups of 5. How many groups of 5 are there?
A) 2 groups
B) 4 groups
C) 3 groups
D) 5 groups
3. Maya finds 20 glowing space-worms. She decides to circle them in groups of 2. How many groups does she make?
A) 8 groups
B) 9 groups
C) 10 groups
D) 5 groups
4. In the lunar coop, there are 25 space-chickens. Maya groups them by 5s to feed them. How many groups does she have?
A) 5 groups
B) 4 groups
C) 6 groups
D) 10 groups
5. Maya counts 8 space-bees buzzing around a crater. If she groups them by 2s, how many groups does she have?
A) 2 groups
B) 3 groups
C) 5 groups
D) 4 groups
- Correct Answer: B (6 groups).
Strategy: Use the Skip-Counting Cluster method. Circle pairs: (1,2), (3,4), (5,6), (7,8), (9,10), (11,12). Count the circles = 6. - Correct Answer: C (3 groups).
Strategy: Circle groups of 5. Count: 5, 10, 15. That is 3 groups of five. - Correct Answer: C (10 groups).
Strategy: Count by 2s up to 20: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20. There are 10 intervals. - Correct Answer: A (5 groups).
Strategy: Count by 5s: 5, 10, 15, 20, 25. That is 5 groups. - Correct Answer: D (4 groups).
Strategy: Pair them up: (2), (4), (6), (8). That is 4 groups of two.