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Bridges in Mathematics Grade 1 Home Connections Answer Key Unit 2 Module 1
Bridges in Mathematics Grade 1 Home Connections Unit 2 Module 1 Session 2 Answer Key
One More Dot, One Less Dot
Question 1.
In the table below:
- Look at the number in the middle and draw that many dots on the domino.
- In the box to the left, put an X on the domino with 1 less dot than your domino.
- In the box to the right, put an X on the domino with 1 more dot than your domino.
Answer:
Explanation:
Given dots:
1 less dot   Given dots  1 more dot
7Â Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 9
7Â Â Â Â Â Â Â Â Â Â 8Â Â Â Â Â Â Â Â Â 9
6Â Â Â Â Â Â Â Â Â Â 7Â Â Â Â Â Â Â Â Â 8
4Â Â Â Â Â Â Â Â Â Â 5Â Â Â Â Â Â Â Â Â 6
8Â Â Â Â Â Â Â Â Â Â 9Â Â Â Â Â Â Â Â Â 10
11Â Â Â Â Â Â Â Â Â 12Â Â Â Â Â Â Â Â 13
Question 2.
In the table below:
- Look at the number in the middle and draw that many dots on the domino.
- In the box to the left, put an X on the domino with 1 less dot than your domino.
- In the box to the right, put an X on the domino with 1 more dot than your domino.
Answer:
Explanation:
1 less dot   Given dots  1 more dot
a.    4          5         6
b.    7          8         9
c.    5          6         7
d.    8          9        10
Bridges in Mathematics Grade 1 Home Connections Unit 2 Module 1 Session 5 Answer Key
Domino Magic Squares
How many dots?
Add the dots on the dominoes going down each column and then going across each row. Then add the sums both ways, vertically and horizontally. Do you get the same total both times? Is it magic, or is there a mathematical explanation?
ex
Question 1.
Answer:
Explanation:
Number of dots given:
1Â +Â 4Â Â = 5.
2Â Â +Â 2 = 4.
=> 5 + 4 = 9.
1 + 2 = 3.
4 + 2 = 6.
=> 3 + 6 = 9.
Question 2.
Answer:
Explanation:
Number of dots given:
3Â +Â 1Â = 4.
1Â +Â 1 = 2.
=> 4 + 2 = 6.
3 + 1 = 4.
1 + 1 = 2.
=> 4 + 2 = 6.
Question 3.
Answer:
Explanation:
Number of dots given:
2Â +Â 0Â = 2.
1Â +Â 4 = 5.
=> 2 + 5 = 7.
2 + 1 = 3.
0 + 4 = 4.
=> 3 + 4 = 7.
Question 4.
Answer:
Explanation:
Number of dots given:
3Â +Â 1Â Â = 4.
2Â Â +Â 1 = 3.
=> 4 + 3 = 7.
3 + 2 = 5.
1 + 1 = 2.
=> 5 + 2 = 7.
Question 5.
Answer:
Explanation:
Number of dots given:
0Â +Â 2Â Â = 2.
3Â +Â 2Â =Â 5.
=> 2 + 5 = 7.
0 + 3 = 3.
2 + 2 = 4.
=> 3 + 4 = 7.
Question 6.
Answer:
Explanation:
Number of dots given:
2Â +Â 1Â Â = 3.
3Â Â +Â 3Â = 6.
=> 3 + 6 = 9.
2 + 3 = 5.
1 + 3 = 4.
=> 5 + 4 = 9.
Challenge Problems
Question 7.
Answer:
Explanation:
Number of dots given:
5Â +Â 1Â Â = 6.
2Â Â +Â 4Â = 6.
=> 6 + 6 = 12.
5 + 2 = 7.
1 + 4 = 5.
=> 7 + 5 = 12.
Question 8.
Answer:
Explanation:
Number of dots given:
5Â +Â 3Â = 8.
5Â Â +Â 5 = 10.
=> 8 + 10 = 18.
5 + 5 = 10.
3 + 5 = 8.
=> 10 + 8 = 18.
9. Make up your own magic square problem below. Draw between 1 and 6 dots on each side of the two dominoes. Then add the dots on the dominoes going down and going across. Then add the sums both ways. Do you get the same total both times? Is it magic?
Answer:
Explanation:
Number of dots given:
1Â +Â 3Â Â = 4.
2Â Â +Â 2 =Â 4.
=> 4 + 4 = 8.
1 + 2 = 3.
3 + 2 = 5.
=> 3 + 5 = 8.