Estimate, +, & -
Function Table
Math Facts
Arrays
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           ??

23            17

??           20


If the "Rule" is "Subtract 6," what would the following numbers be?


In          Out

6             0

10           4

23          17

26          20


100

What is 3 x 6?

3 x 6 = 18!!!



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


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

3             ??

7             ??

??            18

??            25

If the "Rule" is "Add 5," what would the following numbers be?


In          Out

3             8

7             12

13            18

20            25

200

What is 4 x 6?

4 x 6 = 24!!



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!

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 2," what would the following numbers be?


In          Out

1             ??

5             ??

??            11

??            15


If the "Rule" is "Add 2," what would the following numbers be?


In          Out

1             3

5             7

9            11

13            15


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:

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 6 x 7? 

6 x 7 = 42!!



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:

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

What is "THE RULE" for the following table? Come up with your own example.


In          Out

2             12

3             13

5             15

10           20

What is "THE RULE" for the following table? Come up with your own example.


THE RULE IS....... add 10!!!

Examples include:

6           16

50          60

500

What is 9 x 6?

9 x 6 = 54!!



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:



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