The solutions to Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 2 Module 2 can help students to clear their doubts quickly.
Bridges in Mathematics Grade 3 Home Connections Answer Key Unit 2 Module 2
Bridges in Mathematics Grade 3 Home Connections Unit 2 Module 2 Session 2 Answer Key
Skip-Counting & More
Question 1.
Skip-count forward from each number. A few of the numbers have been filled in for you.
Answer:
Question 2.
a. Solve the following problems.
2 × 10 = _____ 4 × 10 = ____ 8 × 10 = _____
Answer:
2 × 10 = 20
4 × 10 = 40
8 × 10 = 80
b. What do you notice about these problems?
Answer:
You multiply by 10 each time. In the product, the digit in the tens place is the same as the number you multiplied by 10.
Question 3.
a. Solve the following problems.
4 × 6 = _____ 3 × 8 = ____ 2 × 12 = ____
Answer:
4 × 6 = 24
3 × 8 = 24
2 × 12 = 24
b. What do you notice about these problems?
Answer:
The product is always 24.
Question 4.
Solve the following problems. Show your thinking using equations, sketches, or words.
a. The greater roadrunner bird can run 14 miles per hour. That’s 7 times faster than an ostrich can walk. How fast does an ostrich walk?
Answer:
Given,
The greater roadrunner bird can run 14 miles per hour.
That’s 7 times faster than an ostrich can walk.
14 ÷ 7 = 2 mile per hour
b. CHALLENGE The body of a greater roadrunner is 16 inches long. Its tail is another 8 inches. The total length of a greater roadrunner is 4 times longer than a lovebird. How many inches long is the lovebird?
Answer:
Given,
The body of a greater roadrunner is 16 inches long.
Its tail is another 8 inches.
The total length of a greater roadrunner is 4 times longer than a lovebird.
16 + 8 = 24
4x = 24
x = 24/4
x = 6
The length of the lovebird is 6 inches.
Bridges in Mathematics Grade 3 Home Connections Unit 2 Module 2 Session 4 Answer Key
Story Problems & Number Line Puzzles
Story Problems
Question 1.
Solve each problem. Use pictures, numbers, or words to show your thinking. Then write an equation for the problem.
a. Roza is 4 years old. Her sister Elsa is twice as old as Roza. How old is Elsa?
Equation: _________
Answer:
Given,
Roza is 4 years old. Her sister Elsa is twice as old as Roza.
4 × 2 = 8
Elsa is 8 years old.
b. Theo’s baby brother, Thomas, is 24 inches tall. Theo is twice as tall as Thomas. How tall is Theo?
Equation: ________
Answer:
Given,
Theo’s baby brother, Thomas, is 24 inches tall. Theo is twice as tall as Thomas.
24 × 2 = 48
Theo is 48 inches tall.
c. Savannah has read 4 pages in her new book. Carlos has read 4 times as many pages as Savannah. How many pages has Carlos read?
Equation: ___________
Answer:
Given,
Savannah has read 4 pages in her new book. Carlos has read 4 times as many pages as Savannah.
4 × 4 = 16
Carlos read 16 pages.
Question 2.
Here is a number line puzzle. Use what you know about multiplication to fill in the blanks.
Answer:
Question 3.
Use pictures, numbers, and words to solve the problem. Then select the equations that represent the problem.
a. Tim saw some monkeys sitting in trees at the zoo. There were 6 monkeys sitting in each tree. There were 24 monkeys in all. How many trees were there?
Answer:
Given,
Tim saw some monkeys sitting in trees at the zoo.
There were 6 monkeys sitting in each tree. There were 24 monkeys in all.
24 ÷ 6 = 4 trees.
b. Which two equations describe the situation in problem 3a?
24 + 6 = n
6 × n = 24
24 – 6 = n
24 – 6 = n
Answer:
6 × n = 24
n = 24/6
Option B is the correct answer.
Question 4.
CHALLENGE The Turner family went bike camping at a state park near their city. It took them 4 hours of riding to get there from their house. For the first 2 hours they rode 12 miles per hour. For the last 2 hours they rode 9 miles per hour. How far is the state park campground from their house?
Answer:
1 hour = 12 miles
2 hour = 24 miles
1 hour = 9 miles
2 hours = 18 miles
24 + 18 = 42 miles
The distance of the state park from their house is 42 miles.