Mental Patterns
Arrays
One digit by one digit
two digit times one digit
2-Digit by 2-Digit
100
Solve using mental math. 50 x 5
What is 250?
100
Write the equation for the following array. 5 rows of 7
What is 5 x 7?
100

3 X 3

9

100

21 X 4

84

100

Solve the equation. 23 x 15

What is 345?

200
Solve using mental math. 80 x 30
What is 240?
200
Write the equation for the following array. 8 groups of 3
What is 8 x 3?
200

5 X 5

25

200

43 X 3

129

200
Solve the equation. 48 x 23
What is 1,104?
300
Solve using mental math. 600 x 70
What is 42,000?
300
Draw the array for the following equation. 4 x 5
What is 4 rows of 5 symbols?
300

6 X 7 

42

300

84 X 5

420

300
Solve the equation. 63 x 18
What is 1,134?
400
Solve using mental math. 90 x 40
What is 3,600?
400
Draw the array for the following equation. 7 x 3
What is 7 rows of 3 symbols?
400

8 X 7 

56

400

56 X 8

448

400
Solve the equation. 74 x 36
What is 2,664?
500
Solve using mental math. 500 x 800
What is 400,000?
500
Draw the array and solve for the following equation. 8 x 5
What is 8 rows of 5 symbols and 40?
500

9 X9 

81

500

98 X 6

588

500
Solve the equation. 92 x 42
What is 3,864?
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