Practicing the Bridges in Mathematics Grade 2 Home Connection Answer Key Unit 3 Module 1 will help students analyze their knowledge of concepts.
Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 3 Module 1
Bridges in Mathematics Grade 2 Home Connections Unit 3 Module 1 Session 1 Answer Key
Steps & Leaps
Note to Families
This Home Connection is a game that students have been playing at school. In Steps & Leaps, players work on separate sheets to try to be first to reach or cross the 100th space. They take turns rolling two dice to determine the number of small steps to take forward and spinning a spinner to leap forward by 10s. As you play, encourage your student to find ways to count by 5s or 10s to move forward on the board.
Materials
- Steps & Leaps pages 1-6
- pencil and paperclip to make a spinner
- 2 dice numbered or dotted 1-6
- 2 small objects (beans, buttons, etc.) for game markers
Instructions
1. Give each player a game board (one of pages 3-6) and a game marker. Write your name on your game board and roll the dice to choose which player will go first.
2. Have the first player roll the dice and spin the spinner to move around his or her game board.
- RoIl the dice. Move forward that many spaces, and record the number of the square on the space where you land.
- Spin the spinner on the next page using a pencil and paperclip. Leap forward by that many 10s. Record the numbers of the squares where you land each time you take a leap of 1o.
I was on 31. I rolled 11 and stepped to 42. I spun 2 tens, so I took 2 jumps by 10s and landed on 52 and 62.
3. After the steps and leaps are recorded, the other player rolls, spins, and records their steps and leaps on their own game board. The first player to reach or cross over 100 is the winner.
4. Using the other two game boards, play the game again. Then complete the problems on page 2 and return this sheet to school.
Steps & Leaps
Count by 10s to fill in the blanks.
Question 1.
10, 20, ___, ___, 50, ___, 70, ___, 90, ______
Answer:
10, 20, 30, 40, 50, 60, 70, 80, 90, 100.
Explanation:
Count by 10s:
10, 20, ___, ___, 50, ___, 70, ___, 90, ______.
=> Missing numbers:
20 + 10 = 30.
30 + 10 =40.
50 + 10 = 60.
70 + 10 = 80.
90 + 10 = 100.
Question 2.
14, 24, ____, ____, 54, ____, 74, ____,94, ____, 114, 124
Answer:
14, 24, 34, 44, 54, 64, 74, 84,94, 104, 114, 124.
Explanation:
Count by 10s:
14, 24, ____, ____, 54, ____, 74, ____,94, ____, 114, 124.
=> Missing numbers:
24 + 10 = 34.
34 + 10 = 44.
54 + 10 = 64.
74 + 10 = 84.
94 + 10 = 104.
Question 3.
26, ____, ___, 56, 66, ___, ___, ____, 106, ___, _____
Answer:
26, 36, 46, 56, 66, 76, 86, 96, 106, 116, 126.
Explanation:
Count by 10s:
26, ____, ___, 56, 66, ___, ___, ____, 106, ___, _____.
=> Missing numbers:
26 + 10 = 36.
36 + 10 = 46.
66 + 10 = 76.
76 + 10 = 86.
86 + 10 = 96.
106 + 10 = 116.
116 + 10 = 126.
Question 4.
CHALLENGE ___, ___, ___, ____, ___, 99, ____, ____, ____, ______
Answer:
49, 59, 69, 79, 89, 99, 109, 119, 129, 139.
Explanation:
Count by 10s:
___, ___, ___, ____, ___, 99, ____, ____, ____, ______.
=> Missing numbers:
99 – 10 = 89.
89 – 10 =79.
79 – 10 = 69.
69 – 10 = 59.
59 – 10 = 49.
99 + 10 = 109.
109 + 10 = 119.
119 + 10 = 129.
129 + 10 = 139.
Question 5.
Add to solve each combination below.
43 + 10 = ____ 56 + 10 = ____ 87 + 10 = ____ 72 + 10 = ____
24 + 20 = ____ 21 + 20 = ____ 45 + 30 = ____
Answer:
43 + 10 = 53.
56 + 10 = 66.
87 + 10 = 97.
72 + 10 = 82.
24 + 20 = 44.
21 + 20 = 41.
45 + 30 = 75.
Explanation:
Given Equations:
43 + 10 = 53.
56 + 10 = 66.
87 + 10 = 97.
72 + 10 = 82.
24 + 20 = 44.
21 + 20 = 41.
45 + 30 = 75.
Question 6.
Subtract to solve each combination below.
15 – 10 = ___ 19 – 10 = ___ 23 – 10 = ___ 34 – 20 = ___
56 – 20 = ____ 88 – 30 = ____ 97 + 40 = ____
Answer:
15 – 10 = 5.
19 – 10 = 9.
23 – 10 = 13.
34 – 20 = 14.
56 – 20 = 36.
88 – 30 = 58.
97 + 40 = 57.
Explanation:
Given Equations:
15 – 10 = 5.
19 – 10 = 9.
23 – 10 = 13.
34 – 20 = 14.
56 – 20 = 36.
88 – 30 = 58.
97 + 40 = 57.
Question 7.
ÇHALLENGE Solve the equations below.
120 + 50 + 20 – 40 = ______ 330 – 20 + 50 – 60 = ______
500 – 50 – 40 – 20 + 120 = _______
Answer:
120 + 50 + 20 – 40 = 150.
330 – 20 + 50 – 60 = 300.
500 – 50 – 40 – 20 + 120 = 510.
Explanation:
Given Equations:
120 + 50 + 20 – 40 = ??
=> 170 + 20 – 40
=> 190 – 40
=> 150.
330 – 20 + 50 – 60 = ??
=> 330 + 50 – 20 – 60
=> 380 – 20 – 60
=> 360 – 60
=> 300.
500 – 50 – 40 – 20 + 120 = ??
=> 500 + 120 – 50 – 40 – 20
=> 620 – 50 – 40 – 20
=> 570 – 40 – 20
=> 530 – 20
=> 510.
Player 1 _________ Player 2 _________
Player 1 _________ Player 2 _________
Player 1 _________ Player 2 _________
Player 1 _________ Player 2 _________
Bridges in Mathematics Grade 2 Home Connections Unit 3 Module 1 Session 3 Answer Key
Puzzles & Shapes
Question 1.
Fill in the missing numbers to solve these equations. Use the pictures to help.
a. ____ = 5 + 5
Answer:
Equation:
10 = 5 + 5.
Explanation:
Number of elephants on right side = 5.
Number of elephants on left side = 5.
Toyal number of elephants given = Number of elephants on right side + Number of elephants on left side
= 5 + 5
= 10.
b.
10 = 2 + 4 + ____
Answer:
Equation:
10 = 2 + 4 + 4.
Explanation:
Number of elephants in first row = 2.
Number of elephants in second row = 4.
Number of elephants in third row = 4.
Total elephants given = Number of elephants in first row + Number of elephants in second row + Number of elephants in third row
= 2 + 4 + 4
= 10.
c.
10 = ____ + 2
Answer:
Equation:
10 = 8 + 2.
Explanation:
Number of balls given on right side = 8.
Number of balls given on left side = 2.
Total balls given = Number of balls given on right side + Number of balls given on left side
= 8 + 2
= 10.
d.
7 + ____ = 10
Answer:
Equation:
7 + 3 = 10.
Explanation:
Number of balls given on right side = 7.
Number of balls given on left side = 3.
Total balls given = Number of balls given on right side + Number of balls given on left side
= 7 + 3
= 10.
e.
10 – ____ = 4
Answer:
Equation:
10 – 6 = 4.
Explanation:
Number of bananas on right side = 6.
Number of bananas on left side = 4.
Total number of bananas = Number of bananas on right side + Number of bananas on left side
= 6 + 4
= 10.
f.
10 – ___ = 7
Answer:
Equation:
10 – 3 = 7.
Explanation:
Number of bananas on right side = 3.
Number of bananas on left side = 7.
Total number of bananas = Number of bananas on right side + Number of bananas on left side
= 3 + 7
= 10.
g.
4 + 5 = ___ + 7
Answer:
Equation:
4 + 5 = 2 + 7.
Explanation:
Number of watermelon pieces in first row = 5.
Number of watermelon pieces in first row = 4.
Total number of watermelon pieces = Number of watermelon pieces in first row + Number of watermelon pieces in first row
= 5 + 4
= 9.
h.
10 – 5 = 2 + ____
Answer:
Equation:
10 – 5 = 2 + 3.
Explanation:
Number of watermelon pieces are not crossed = 5.
Number of crossed watermelon pieces = 5.
Total number of watermelon pieces = Number of watermelon pieces are not crossed + Number of crossed watermelon pieces
= 5 + 5.
Question 2.
Fill in the missing numbers to solve these equations.
5 + 4 + 1 = ____ 6 + 4 + ___ = 13 5 + ___ + 9 = 19
16 – ____ = 6 14 – ____ = 7 12 – 6 = _____
10 – 3 = 2 + ____ 12 – 6 = 2 + ____ 16 – 8 = _____ + 1
Answer:
Equations:
5 + 4 + 1 = 10.
6 + 4 + 3 = 13.
5 + 5 + 9 = 19.
16 – 10 = 6.
14 – 7 = 7.
12 – 6 = 6.
10 – 3 = 2 + 5.
12 – 6 = 2 + 4.
16 – 8 = 7 + 1.
Explanation:
Missing numbers:
5 + 4 + 1 = ??
=> 9 + 1 = ??
=> 10 = ??.
6 + 4 + ?? = 13
=> 10 + ?? = 13
=> ?? = 13 – 10
=> ?? = 3.
5 + ?? + 9 = 19.
=> ?? + 14 = 19
=> ?? = 19 – 14
=> ?? = 5.
16 – ?? = 6.
=> 16 – 6 = ??
=> 10 = ??.
14 – ?? = 7.
=> 14 – 7 = ??
=> 7 = ??.
12 – 6 = ??
=> 12 – 6 = 6.
10 – 3 = 2 + ??
=> 7 = 2 + ??
=> 7 – 2 = ??
=> 5 = ??.
12 – 6 = 2 + ??
=> 6 = 2 + ??
=> 6 – 2 = ??
=> 4 = ??.
16 – 8 = ?? + 1.
=> 8 = ?? + 1
=> 8 – 1 = ??
=> 7 = ??.
Question 3.
CHALLENGE Fill in the missing numbers to solve these equations.
90 – 30 = 20 + ____ 143 – 11 = 127 + ____ 160 – 18 = ___ + 15
Answer:
Equations:
90 – 30 = 20 + 40.
143 – 11 = 127 + 5.
160 – 18 = 127 + 15.
Explanation:
Missing numbers in the equations:
90 – 30 = 20 + ??
=> 60 = 20 + ??
=> 60 – 20 = ??
=> 40 = ??.
143 – 11 = 127 + ??
=> 132 = 127 + ??
=> 132 – 127 = ??
=> 5 = ??.
160 – 18 = ?? + 15.
=> 142 = ?? + 15
=> 142 – 15 = ??
=> 127 = ??.
Question 4.
How much does this shape picture cost? Circle the coins you could use to pay for it.
Answer:
Explanation:
Given coins values = 25 cents, 20 cents, 5 cents , 5 cents.
Total value of the given coins = 25 cents + 20 cents + 5 cents + 5 cents
= 45 cents + 5 cents + 5 cents
= 50 cents + 5 cents
= 55 cents.
Question 5.
Draw a vehicle (car, boat, truck, plane, scooter, bike, skateboard) that costs 754. Label your picture with the prices. Add the numbers to check your work.
Answer:
Explanation:
Number of coins given = 4$, 3$, 20¢, 5¢, 5¢, 5¢, 5¢, 4¢,
Conversion:
1 dollar = 100 cents.
Total value of coins given = 4$ + 3$ + 20¢ + 4(5¢) + 14¢
= 4(100¢) + 3(100¢) + 20¢ + (20¢) + 14¢
= 400¢ + 300¢ + 20¢ + 20¢ + 14¢
= 700¢ + 20¢ + 20¢ + 14¢
= 720 ¢ + 20¢ + 14¢
= 740 ¢ + 14¢
= 754 ¢.
Bridges in Mathematics Grade 2 Home Connections Unit 3 Module 1 Session 5 Answer Key
Subtracting on the Line & Solving Story Problems
DJ Hopper says you can use what you know about making 10 to help subtract.
If the fact is 15 – 8, you can think about making 10 (8 + 2 = 10) and then adding 5 more to get to 15. DJ likes to show his work on the number line, like this.
ex 15 – 8 = 7
Question 1.
Make hops on the number line and label them to solve subtraction problems.
a. 14 – 7 = _____
Answer:
Explanation:
Given equation:
Subtraction:
14 – 7 = 7.
b. 16 – 9 = ____
Answer:
Explanation:
Given equation:
Subtraction:
16 – 9 = 7.
c. 13 – 6 = ____
Answer:
Explanation:
Given equation:
Subtraction:
13 – 6 = 7.
d. 14 – 8 = ____
Answer:
Explanation:
Given equation:
Subtraction:
14 – 8 = 6.
Question 2.
Jose, Matt, and Dani went to the library. They each checked out 5 books. How many books is that in all? Show your work.
Jose, Matt, and Dani checked out ____ books in all.
Answer:
Total number of books in all = 15.
Jose, Matt, and Dani checked out 15 books in all.
Explanation:
Number of books they checked out each = 5.
Number of persons = 3.
Total number of books in all = Number of books they checked out each × Number of persons
= 5 × 3
= 15.
Question 3.
CHALLENGE Show your work on each problem. Four granola bars cost $2.00.
a. How much does 1 granola bar cost? ________
Answer:
Cost of one granola bars = $0.50.
Explanation:
Cost of four granola bars = $2.00.
Cost of one granola bars = Cost of four granola bars ÷ 4
= $2 ÷ 4
= $0.50.
b. How much do 2 granola bars cost? ______
Answer:
Cost of two granola bars = $1.00.
Explanation:
Cost of one granola bars = $0.50.
Cost of two granola bars = Cost of one granola bars × 2
= $0.50 × 2
= $1.00.
c. How much do 5 granola bars cost? ______
Answer:
Cost of five granola bars = $2.50.
Explanation:
Cost of one granola bars = $0.50.
Cost of five granola bars = Cost of one granola bars × 5
= $0.50 × 5
= $2.50.
