Practice the questions of McGraw Hill Math Grade 4 Answer Key PDF Chapter 2 Lesson 7 Additive Comparison to secure good marks & knowledge in the exams.
McGraw-Hill Math Grade 4 Answer Key Chapter 2 Lesson 7 Additive Comparison
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Write the answer and the expressions you used to find it.
Question 1.
A young male elephant is 85 inches tall. A young female elephant is 57 inches tall. If the female elephant grows to 102 inches tall, how tall will the male elephant be if they grow the same amount?
Answer:
Number of inches tall a young male elephant grows = 130.
Explanation:
Number of inches tall a young male elephant = 85.
Number of inches tall a young female elephant = 57.
Number of inches tall if a young female elephant grows = 102.
Difference:
Number of inches tall if a young female elephant grows – Number of inches tall a young female elephant
= 102 – 57
= 45.
Number of inches tall a young male elephant grows = Number of inches tall a young male elephant + 45
= 85 + 45
= 130.
Question 2.
A male box turtle is 17 years old. A female box turtle is 28 years old. When the male is 33 years old, how old will the female be?
Answer:
Number of years old is a female box turtle later = 44.
Explanation:
Number of years old is a male box turtle = 17.
Number of years old is a female box turtle = 28.
Number of years old is a male box turtle later = 33.
Difference:
Number of years old is a male box turtle later – Number of years old is a male box turtle
= 33 – 17
= 16.
Number of years old is a female box turtle later = Number of years old is a male box turtle later + 11
= 28 + 16
= 44.