Practicing the **Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 5 Module 4 **will help students analyze their knowledge of concepts.

## Bridges in Mathematics Grade 2 Home Connections Answer Key Unit 5 Module 4

**Bridges in Mathematics Grade 2 Home Connections Unit 5 Module 4 Session 1 Answer Key**

**Lines, Buttons & Adding Practice**

Question 1.

Find each sum. Use the pictures of base ten pieces to help.

a.

Answer:

Explanation:

By using the above given picture of base ten pieces performed addition operation. By adding 17 with 25 the sum is equal to 42.

b.

Answer:

Explanation:

By using the above given picture of base ten pieces performed addition operation. By adding 24 with 36 the sum is equal to 60.

Question 2.

Find each sum.

21 + 8 = _____________

42 + 7 = _____________

32 + 16 = _____________

24 + 13 = _____________

Answer:

21 + 8 = **29**

42 + 7 = **49**

32 + 16 = **48**

24 + 13 = **37
**Explanation:

Performed addition operation on above given equation.

Question 3.

Use Pencil Puppy’s strategy for adding 2-digit numbers. Remember, she adds the tens first. Then she adds the ones. Then she finds the total.

ex:

a.

Answer:

Explanation:

Used Pencil Puppy’s strategy to add given 2-digit numbers. First, we have to add the tens and then ones. Add 50 with 13 the sum is equal to 63. The total is equal to 63.

b.

Answer:

Explanation:

Used Pencil Puppy’s strategy to add given 2-digit numbers. First, we have to add the tens and then ones. Add 80 with 11 the sum is equal to 91. The total is equal to 91.

c.

Answer:

Explanation:

Used Pencil Puppy’s strategy to add given 2-digit numbers. First, we have to add the tens and then ones. Add 60 with 13 the sum is equal to 73. The total is equal to 73.

d.

Answer:

Explanation:

Used Pencil Puppy’s strategy to add given 2-digit numbers. First, we have to add the tens and then ones. Add 90 with 7 the sum is equal to 97. The total is equal to 97.

e.

Answer:

Explanation:

Used Pencil Puppy’s strategy to add given 2-digit numbers. First, we have to add the tens and then ones. Add 50 with 17 the sum is equal to 67. The total is equal to 67.

Question 4.

Tami is standing in line. There are 3 other children in front of her. There are 8 children behind her.

a. How many children are standing in line? Show your work.

There are _____________ children standing in line.

Answer:

Tami is standing in line.

There are 3 other children in front of her.

There are 8 children behind her.

3 + 1 + 8 = **12**

There are **12** children standing in line.

b. Which strategy did you use to solve this problem? (Circle one.)

Draw a picture.

Make a chart.

Write a number sentence.

Other

Answer:

Explanation:

Drawn a circle for the strategy I used to solve the given problem as we can observe in the above image.

Question 5.

**CHALLENGE** Frank’s mom gave him 8 buttons. The buttons have 22 holes in all.

a. How many of the 8 buttons have 4 holes? How many of the 8 buttons have 2 holes? Show your work.

____________ of the 8 buttons have 4 holes. ___________ of the 8 buttons have 2 holes.

Answer:

**3** of the 8 buttons have 4 holes. **5 **of the 8 buttons have 2 holes.

Explanation:

Multiply 3 buttons with 4 holes the product is equal to the 12 holes.

3 x 4 = 12

Multiply 5 buttons with 2 holes the product is equal to the10 holes.

5 x 2 = 10

Add 12 holes with 10 holes the sum is equal to the 22 holes.

Add 3 buttons with 5 buttons the sum is equal to the 8 buttons.

Frank’s mom gave him 8 buttons. The buttons have 22 holes in all.

b. Which strategy did you use to solve this problem? (Circle one.)

Draw a picture

Make a chart

Write a number sentence

Other

Answer:

Explanation:

Drawn a circle for the strategy I used to solve the given problem as we can observe in the above image.

**Bridges in Mathematics Grade 2 Home Connections Unit 5 Module 4 Session 3 Answer Key**

**Numbers, Cubes & Marbles**

Question 1.

Count by 10s, either forward or backward, to fill in the missing numbers.

a. 10, 20, 30, 40, _______, _______, _______, 80, _______, 100, 110, _______, _______

Answer:

10, 20, 30, 40, **50**, **60**, **70**, 80, **90**, 100, 110,**120**, **130
**Explanation:

The missing numbers are counted by 10s in forward direction.

b. 280, 270, 260, _______, _______, 230, _______, _______, 200, _______, _______

Answer:

280, 270, 260, **250**, **240**, 230, **220**, **210**, 200, **190**, **180 **

Explanation:

The missing numbers are counted by 10s in backward direction.

c. 203, 213, 223, _______, _______, 253, _______, _______, _______, 293, _______

Answer:

203, 213, 223, **233**, **243,** 253, **263**, **273**, **283**, 293, **303
**Explanation:

The missing numbers are counted by 10s in forward direction.

d. 567, 557, 547, 537, _______, _______, 507, _______, 487, _______, 467

Answer:

567, 557, 547, 537, **527**,** 517**, 507,**497**, 487, **477**, 467

Explanation:

The missing numbers are counted by 10s in backward direction.

Question 2.

Count by 100s, either forward or backward, to fill in the missing numbers.

a. 100, 200, 300, _______, _______, _______, 700, _______, _______

Answer:

100, 200, 300, **400**, **500**, **600**, 700, **800**, **900 **

Explanation:

The missing numbers are counted by 10s in Forward direction.

b. 950, 850, 750, _______, _______, _______, 350, _______, _______

Answer:

950, 850, 750, **650**, **550**, **450**, 350, **250**,**150
**Explanation:

The missing numbers are counted by 10s in backward direction.

c. 203, 303, 403, _______, _______, _______, 803, _______, 1003

Answer:

203, 303, 403, **503**, **603**, **703**, 803, **903**, 1003

Explanation:

The missing numbers are counted by 10s in Forward direction.

d. 914, 814, 714, _______, _______, 414, _______, _______, _______

Answer:

914, 814, 714, **614**, **514**, 414, **314**, **214**, **114 **

Explanation:

The missing numbers are counted by 10s in backward direction.

Question 3.

Find each sum.

400 + 70 + 2 = ______________

800 + 50 + 5 = ______________

600 + 20 + 8 = ______________

100 + 10 + 3 = _______________

Answer:

400 + 70 + 2 = **472**

800 + 50 + 5 = **855**

600 + 20 + 8 = **628**

100 + 10 + 3 = **113
**Explanation:

Performed addition operation on above given equation and given number as we can observe in the above image.

Question 4.

Circle the answer in each of the questions below.

a. The 3 in 359 is in the

ones place

tens place

hundreds place

Answer:

Explanation:

The 3 in 359 is in the hundreds place. So, drawn a circle for the hundreds place.

b. The 4 in 904 is in the

ones place

tens place

hundreds place

Answer:

Explanation:

The 4 in 904 is in the ones place. So, drawn a circle for the ones place.

c. The 5 in 256 is in the

ones place

tens place

hundreds place

Answer:

Explanation:

The 5 in 256 is in the tens place. So, drawn a circle for the tens place.

Question 5.

Ebony put 10 cubes into two stacks. One stack has 4 more cubes than the other stack.

a. How many cubes are in each stack? Show your work.

There are ___________ cubes in one stack and ____________ cubes in the other stack.

Answer:

There are **3** cubes in one stack and **7** cubes in the other stack.

b. Which strategy did you use to solve this problem? (Circle one.)

Draw a picture

Act it out with cubes

Make a list

Other

Answer:

Explanation:

Drawn a circle for the strategy I used to solve the given problem as we can observe in the above image.

Question 6.

**CHALLENGE** Jose has a bag of marbles. There are 8 red marbles in the bag. There are twice as many green marbles as red marbles. There are 2 fewer blue marbles than green marbles. There are half as many white marbles as blue marbles.

a. How many marbles are in the bag? Show your work.

There are _____________ marbles in the bag.

Answer:

There are **8 red marbles** in the bag.

There are twice as many green marbles as red marbles.

Twice of red marbles means add red marbles two times.

8 + 8 = 16 marbles

There are **16 green marbles**.

There are 2 fewer blue marbles than green marbles.

Subtract 2 marbles from 16 green marbles the difference is equal to 14.

16 – 2 = 14

There are **14 blue marbles**.

There are half as many white marbles as blue marbles.

Divide 14 blue marbles by 2 the result is equal to 7.

14/2 = 7

There are **7 white marbles**.

8 + 16 + 14 + 7 = 45

There are **45** marbles in the bag.

b. Which strategy did you use to solve this problem. (Circle one.)

Draw a picture

Act it out with cubes

Make a list

Other

Answer:

Explanation:

Drawn a circle for the strategy I used to solve the given problem as we can observe in the above image.