Addition and Subtraction up to 20
Measuring Length
Addition
Subtraction
Measuring Time
100

9-6=

3

100

Name the unit used to measure the length of a book.

What is inches?

100

50+10=

60

100

22-12=

10

100

The tool we use to measure time.

What is a clock?

200

12+2=

14

200

The number of inches in a foot.

What is 12 inches?

200

12+12=

24

200

46-20=

26

200

Two different types of clocks. 

What is analog and digital?

300

14-10=

4

300

Describe how to measure using a ruler.

Line up the ruler on the end (or where it says zero). 

300

72+14=

86

300

55-10=

45

300

The number of minutes in an hour.

What is 60?

400

8+8=

16

400

The shortest of these measurements: foot, yard, inch.

What is an inch?

400

33+42=


75

400

87-13=

74

400

The number of seconds in a minute?

What is 60?

500

11+9=

20

500

The longest of all of these measurements: 4 feet, 24 inches, 2 yards.

What is 2 yards?

500

122+22=

144

500

100-60=

40

500

The hour hand is directly between the 8 and the 9 and the minute hand is on the 6. 

What is 8:30?