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

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

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

**Two-Digit Subtraction & Story Problems**

**Use DJâ€™s number line strategy to solve these subtraction problems.**

ex: 64 – 35

Question 1.

60 – 32

Answer:

- Start at 32.
- Hop up to 40.
- Then hop up to 60 and add up all your hops. That tells how far it is from 32 to 60.

60 – 32 = 28

Question 2.

54 – 27

Answer:

- Start at 27.
- Hop up to 30.
- Now hop up to 50.
- Then hop up to 54 and add up all your hops. That tells how far it is from 27 to 54.

54 – 27 = 27

Question 3.

71 – 26

Answer:

- Start at 26.
- Hop up to 30.
- Now hop up to 70.
- Then hop up to 71 and add up all your hops. That tells how far it is from 26 to 71.

Question 4.

There were 15 cookies on the plate. The dog ate some of them. Now there are only 7 cookies on the plate. How many did the dog eat? Show your work.

The dog ate _____________ cookies.

Answer:

Given,

There were 15 cookies on the plate. The dog ate some of them.

Now there are only 7 cookies on the plate.

15 – 7 = 8

The dog ate 8 cookies.

Question 5.

Ann had 4 apples. She cut each apple into 5 slices. Each slice had 3 seeds in it. How many seeds in all? Show your work.

There were ___________ seeds in all.

Answer:

Given,

Ann had 4 apples. She cut each apple into 5 slices.

4 Ã— 5 = 20 slices

Each slice had 3 seeds in it.

20 Ã— 3 = 60 seeds

Thus there are 60 seeds in all.

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

**Patterns with Numbers & Beads**

Question 1.

Fill in the missing numbers on this chart.

a. Color all the counting-by-2s numbers red.

Answer:

b. Color all the counting-by-5s numbers yellow.

Answer:

c. Color all the counting-by-10s numbers blue.

Answer:

Question 2.

The numbers in the box are mixed up! Put them in order from least to greatest.

Answer:

The numbers from least to greatest are 14, 17, 40, 51, 62 and 78.

Question 3.

Trina has 17 beads. Nine of the beads are blue, and the rest are red.

a. How many red beads does Trina have? Show your work.

Trina has ____________ red beads.

Answer:

Trina has 17 beads. Nine of the beads are blue, and the rest are red.

17 – 9 = 8

Trina has 8 red beads.

b. Trina wants to make a bracelet with her beads. How can she make a color pattern with her 17 blue and red beads? Draw a picture to show.

Answer:

Question 4.

**CHALLENGE** Look for a pattern. Fill in the missing numbers that fit your pattern.

a. 1, 7, 13, 19, ______, ______, ______,

Answer:

First number = 1

Second number = 7

7 – 1 = 6

So, the sequence is 6.

1, 7, 13, 19, 25, 31, 37.

b. 2, 7, 12, 17, ______, ______, ______,37, ______, ______,52

Answer:

First number = 2

Second number = 7

7 – 2 = 2

So, the sequence is 5.

2, 7, 12, 17, 22, 27, 32, 37, 42, 47, 52

c. 25, 20, 15, ______, ______, ______

Answer:

First number = 25

Second number = 20

20 – 25 = -5

So, the sequence is 5.

25, 20, 15, 10, 5, 0.

d. 24, 20, 16, 12, ______, ______, ______

Answer:

First number = 24

Second number = 20

24 – 20 = 4

So, the sequence is 4.

24, 20, 16, 12, 8, 4, 0.

e. 1, 2, 4, 7, 11, ______, ______, 29, ______, 46, ______

Answer:

2 – 1 = 1

4 – 2 = 2

7 – 4 = 3

11 + 5 = 16

16 + 6 = 22

22 + 7 = 29

29 + 8 = 37

37 + 9 = 46

46 + 10 = 56

1, 2, 4, 7, 11, 16, 22, 29, 37, 46, 56.

f. 1, 2, 4, 8, ______, ______, ______, 128, ______, ______

Answer:

The sequence is multiple of 2

1 Ã— 2 = 2

2 Ã— 2 = 4

4 Ã— 2 = 8

8 Ã— 2 = 16

16 Ã— 2 = 32

32 Ã— 2 = 64

64 Ã— 2 = 128

128 Ã— 2 = 256

256 Ã— 2 = 512

1, 2, 4, 8, 16, 32, 64, 128, 256, 512.