Estimate, +, & - (Hard)
Function Table (Med)
Math Facts (Easy)
Arrays (Med)
Helper Facts/Misc.
100
Solve the following. Please ESTIMATE your answer before solving by rounding to the nearest ten. :)
136
+428
So, first you would round to the nearest ten. This would be:
140
+430
570
Then, you would actually add:
136
+428
564
100
If the "Rule" is "Subtract 6," what would the following numbers be?
In Out
6 ??
10 ??
?? 17
?? 20
?? ??
If the "Rule" is "Subtract 6," what would the following numbers be?
In Out
6 0
10 4
23 17
26 20
8 2 (for example)
100
What is 2 x 7?
2 x 7 = 14
100
What number model would go with this array?
Technically, there is ONE row of THREE.
So, the correct answer would be 1 x 3 = 3
100
How could you figure out the answer to 6 x 8?
HINT: You probably know 5 x 8......
So, 5 x 8 = 40 (Count by 5's eight times.)
Then, you just need to add eight!
40 + 8 = 48!
So, 6 x 8 = 48!!
200
Solve the following. Please ESTIMATE your answer before solving by rounding to the nearest ten. :)
567
+204
So, first you would round to the nearest ten. This would be:
570
+200
770
Then, you would actually add:
567
+204
771
200
If the "Rule" is "Add 5," what would the following numbers be?
In Out
1 ??
5 ??
?? 11
?? 15
If the "Rule" is "Add 5," what would the following numbers be?
In Out
1 6
5 10
6 11
10 15
200
What is 5 x 6?
5 x 6 = 30
200
What would the number model be for this array?
Technically, there are THREE rows of FOUR.
So, the number model would be:
3 x 4 = 12!
200
How could you figure out the answer to 7 x 7?
Hint: Do you know what 5 x 7 is?
So, 5 x 7 = 35 (Count by 5's seven times.)
Now, we just need those last two seven's!
7 + 7= 14, so then we just need to add 35 + 14!
So, 7 x7 = 49. :)
300
Solve the following. Please ESTIMATE your answer before solving by rounding to the nearest ten. :)
425
-118
So, first you would round to the nearest ten. This would be:
430
-120
310
Then, you would actually subtract:
425
-118
307
300
If the "Rule" is "Add 7," what would the following numbers be?
In Out
4 ??
7 ??
?? 10
?? 18
If the "Rule" is "Add 2," what would the following numbers be?
In Out
4 11
7 14
3 10
11 18
300
What is 4 x 8?
4 x 8 = 32
300
Make an array for 3 x 5. (THREE rows of FIVE.)
Make sure to not make an array for 5 x 3 because that would be a different array.
Your array should look something like this:
300
Which multiplication square is this array?
a.) 2 x 2
b.) 3 x 3
c.) 4 x 4
d.)5 x 5
Well, since there are FOUR rows of FOUR, that means the number model would have to be 4 x 4!
So, letter "c" is the answer!
If an array is a "multiplication square," that means it has the same number of rows AND columns.
400
Solve the following. Please ESTIMATE your answer before solving by rounding to the nearest ten. :)
732
-549
So, first you would round to the nearest ten. This would be:
730
-550
180
Then, you would actually subtract:
732
-549
183
400
What is "THE RULE" for the following table? Come up with your own example.
In Out
2 4
3 6
5 10
10 20
?? ??
What is "THE RULE" for the following table? Come up with your own example.
THE RULE IS....... x by 2!!! (or times by 2)
Examples include:
7 14
100 200
400
What is 4 x 4?
4 x 4 = 16
400
Make an array for 2 x 9. (TWO rows of NINE)
Please do not make an array for 9 x 2, as this will be a different array!
Your array should look something like this:
400
Which multiplication square is this array?
a.) 2 x 2
b.) 3 x 3
c.) 4 x 4
d.)5 x 5
Well, since there are THREE rows of THREE, that means the number model would have to be 3 x 3!
So, letter "b" is the answer!
If an array is a "multiplication square," that means it has the same number of rows AND columns.
500
Solve the following. Please ESTIMATE your answer before solving by rounding to the nearest ten. :)
900
-243
So, first you would round to the nearest ten. This would be:
900
-240
660
Then, you would actually subtract:
900
-243
657
500
If the "Rule" is "Multiply by 5," what would the following numbers be?
In Out
6 ??
10 ??
?? 15
?? 25
If the "Rule" is "Multiply by 5," what would the following numbers be?
In Out
6 30
10 50
3 15
5 25
500
What is 6 x 6?
6 x 6 = 36
500
MAKE TWO ARRAYS!!
One for 4 x 5, and another for 5 x 4!
So, your array for 4 x 5 (or FOUR rows of FIVE) should look like this:
And, your array for 5 x 4 (or FIVE rows of FOUR) should look like this:
500
4 x 4 Explain how these two arrays are related:
1.)
2.)
Well, the arrays both have EIGHT (8) total dots.
And, they are really the same array but are FLIPPED.
The top array is 2 x 4 (or TWO rows of FOUR.)
The bottom array is 4 x 2 (or FOUR rows of TWO.)