Subtracting
Arrays
measuring
Challenge
100

7+8?

15

100

10-5

5

100

draw an array for this repeated addition equation.

2+2+2+2

four rows of two.

100

What is the length of line on the screen?

3 inches

100

partition a square in half

teacher check

200

25+13

38

200

25-15

10

200
Draw an array for this equation.

3+3+3+3+3

five rows of 3

200

what is the length of the pen?

4 inches

200

if I wanted to measure a book shelf what would I use?

(inch , foot, yard)

yard

300

65+35

100

300

65-23

42

300

Draw an array for this equation.

7+7

2 rows of 7

300

what is the length of the rose?

5 inches

300

partition a circle into fourths.

teacher check

400

125+34

159

400

137-28

109

400

Draw an array for this equation.

4+4+4+4

4 rows of 4

400

how long is the line?

11 inches

400

If I wanted to measure a shoe what measurement would I use?

(inch, foot, yard)

inch

500

157+124

281

500

272-157

115

500

Draw an array for this equation.

1+1+1+1+1+1+1

7 rows of 1

500

how long is the line?

11 and 1/2 inches

500

Tommy wakes up at 6:30 AM to get to school.  If he needs to get to the bus stop by 8:00 AM, how much time does he have to wait?

1 hour and 30 minutes

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