Guess and Check
1).
A farmer has chickens and pigs. In his barnyard, he counted 200 heads and 500 feet. How many pigs does he have?
Animals
Chickens (2 feet)
Pigs (4 feet)
Total feet = 500
200
100
100
200 + 400 = 600
too many pigs
200
200
200
Answer: ______
2).
Mrs. Wright has dimes and quarters. She has 30 coins for a total value of $3.90. How many quarters does she have?
Coins
Dimes (10 cents)
Quarters (25 cents)
Total = 390 cents
30
30
30
30
Answer: ______
3).
A gardener found spiders and insects in his roses. There were 5000 of the pests with a total of 34,000 legs. How many insects were there?
Pests
Spiders (8 legs)
Insects (6 legs)
Total legs = 34,000
5,000
5,000
5,000
5,000
Answer: ______