Bridges in Mathematics Grade 1 Student Book Unit 7 Answer Key One Hundred & Beyond

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Bridges in Mathematics Grade 1 Student Book Answer Key Unit 7 One Hundred & Beyond

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 1 Session 3 Answer Key

Two Turns to Build Record Sheet

Game 1 (with the teacher)

Write your score on the first line. Write your partner’s score on the other line. Use the correct symbol (>, =, or <) to compare the two. Circle the winning score.
___________ ________________
Answer:
The winning score is 14.

Explanation:

Game 2 (with a partner)

Write your score on the first line. Write your partner’s score on the other line. Use the correct symbol (>, =, or <) to compare the two. Circle the winning score.
___________ ________________
Answer:
The winning score is 13.

Explanation:

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 1 Session 5 Answer Key

Race to Zero

Answer:
In this partner game, each player starts with a 90. In this game, the goal is to be the first to reach exactly 0 as players take turns subtracting multiples of 10 from the starting number. We need to record the numbers subtracted and the remaining numbers on the given sheets.
In this game, we will place all the cards to keep in a pile face down except for the one 0 cards. Place 0 card beside.
Once we draw the card we will place it beside the 0 cards to make a 2-digit number. Then we will remove that many cards.

Hence player 1 won the game.

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 2 Session 2 Answer Key

Pebble Count

Look at the pebbles along each part of the path. Fill in the missing numbers.

Question 1.

Answer:
The missing numbers are 24 and 27.

Explanation:
The missing numbers are 24 and 27.

Question 2.

Answer:
The missing numbers are 42, 43, 44, and 45.

Explanation:
The missing numbers are 42, 43, 44, and 45.

Question 3.

a. CHALLENGE Hansel and Gretel used a pebble to mark every 10 steps as they walked along the path. How many steps have they taken when they get to the last pebble on this part of the path? ____________ Use numbers and words to explain how you know.
Answer:
Hansel and Gretel took 17 steps to get to the last pebble on this part of the path.

Explanation:

Question 4.

Answer:
Hansel and Gretel took 64 steps to get to the last pebble on this part of the path. They started at 59 step and ended at 64.

Explanation:

Question 5.

a. CHALLENGE Hansel and Gretel used a pebble to mark every 10 steps as they walked along the path. How many steps have they taken when they get to the last pebble on this part of the path? ________ Use numbers and words to explain how you know.
Answer:
They have taken 81 steps to get to the last pebble on this part of the path.

Explanation:

Question 6.

Answer:
Hansel and Gretel took 106 steps to get to the last pebble on this part of the path.

Explanation:

Question 7.

Answer:
They have taken 120 steps to get to the last pebble on this part of the path.

Explanation:

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 2 Session 3 Answer Key

More Pebbles & Pinecones

Question 1.
For each path section below, fill in the blanks to show how many steps it takes to reach each pebble and each pinecone.
a.

Answer:
It takes 0 to 55 steps to reach each pebble and each pinecone.

Explanation:

b.

Answer:
It takes 30 to 85 steps to reach each pebble and each pinecone.

Explanation:

c.

Answer:
It takes 60 to 115 steps to reach each pebble and each pinecone.

Explanation:

Question 2.
Count forward by 5s to fill in the missing numbers.

Answer:
We have filled in the missing numbers by counting forward with 5.

Explanation:

Question 3.
Count backward by 5s to fill in the missing numbers.

Answer:
We have filled in the missing numbers by counting forward with 5.

Explanation:

Question 4.
CHALLENGE Hansel and Gretel know it will take a lot of pinecones to mark the 5th step between every two pebbles on the trail. How many pinecones will they need to mark the trail from O to the loo steps?

Use sketches, numbers, or words to help figure it out, and show all of your work.
Write your answer on the line.

It will take ____________ pinecones.
Answer:
It will take 3 pinecones.

Explanation:

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 2 Session 4 Answer Key

Missing Bread Crumbs

Question 1.
How many bread crumbs, pinecones, and pebbles will you need to mark 10 steps?

I need ____________ bread crumb(s).
I need ____________ pinecone(s).
I need ____________ pebble(s).
Answer:
5 bread crumbs, 1 pinecone, and zero pebbles.

Explanation:
Given,
For every 1 step = Bread crumb
For every 5 steps = 1 pinecone
For every 10 steps = 1 pebble.
Hence we need,
I need 5 bread crumbs (s).
I need 1 pinecone(s).
I need zero pebbles (s) to make 10 steps.

Question 2.
Use the clues on these paths to figure out what number belongs in each empty box. Do you see that the birds have come along and eaten some of the bread crumbs?
a.

Answer:
41 and 55 belong in each empty box.

Explanation:

b.

Answer:
43 and 60 belong in each empty box.

Explanation:

Question 3.
Use the clues on the path below to figure out what belongs in each empty circle—a pebble, a pinecone, or a bread crumb.

Answer:
We need 1 pinecone and 1 pebble.

Explanation:

Question 4.
CHALLENGE How many pebbles, pinecones, and bread crumbs would you need to mark the first 30 steps on the trail?
I need _____________ bread crumbs.
I need _____________ pinecones.
I need _____________ pebbles.
Answer:
30, 6, and 3.

Explanation:
I need 30 breadcrumbs.
I need 6 pinecones.
I need 3 pebbles.

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 2 Session 5 Answer Key

Path Problems

Use the clues on the path to solve these problems.

Question 1.
Find the pinecone between the pond and the silver tree. If you started at the very beginning of the path (including the part you can’t see), how many steps would it take to get to that pinecone?
Answer:
44 steps.

Explanation:
It would take 44 steps to get that pinecone.

Question 2.
Find the pebble near the tall grass. What number step does that pebble mark?
Answer:
The number of steps that the pebble mark has is 60.

Explanation:
Check the below figure:

Question 3.
A log has fallen across the path. At what number is the log?
Answer:
The number 52 is the log in the given path.

Explanation:
In the given figure a log has fallen across the path.
The log fell on the number 52.
Check the below figure

Question 4.
There are five empty boxes along the path. Figure out what number belongs in each box, and write it in the box.
Answer:
The numbers that belong in each box are 31, 43, 47, 56, and 70.

Explanation:

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 3 Session 1 Answer Key

Ten Steps on the Path

Work with your partner to plan some different ways to make a nice path section that is 10 steps long.

Decide what color Unifix cubes to use for the fence sections, the benches, and the flowerpots. Use a different color for each type of object.
Build 2 fence sections, 4 benches, and 10 flowerpots in the colors you chose.
Color the cubes in the key to show what color you are using for each object.
Make different arrangements of the fence sections, benches, and flowerpots to fill a path that is 10 steps long.
Color in each arrangement on the path sections below. Use crayons or colored pencils to match the Unifix cubes.

Answer:
2 fence section = 20 steps
4 Bench = 20 steps
10 flowerpots = 10 steps.

Explanation:
Given,
For the 2 fence section, we have colored 20 steps with green color.
For the 4 Bench section, we have colored 20 steps with blue color.
For 10 flowerpots we have colored 10 steps with red color.

Bridges in Mathematics Grade 1 Student Book Unit 7 Module 3 Session 2 Answer Key

Twenty Steps on the Path

Work with your partner to plan some different ways to make a nice path section that is 20 steps long.

Decide what color Unifix cubes to use for the fence sections, the benches, the trash cans, and the flowerpots.
Build 2 fence sections, 4 benches, 5 trash cans, and 10 flowerpots in the colors you chose.
Color the cubes in the key to show what color you are using for each object.
Make different arrangements of the fence sections, benches, trash cans, and flowerpots to fill a path that is 20 steps long.
Color in each arrangement on the path sections below. Use crayons or colored pencils to match the Unifix cubes.
Write an addition equation under each path to show that it is really 20 steps long.