Question

1. for the ruler:

a. identify whether the ruler is standard or metric.
b. identify each ruler as having a base unit of 8, 16, or 10
c. read each ruler and record its measurement.
a.
a.

b.
b.

Explanation:

Step1: Analyze Ruler A (Metric/Base)

Ruler A uses centimeters (metric), with 10 sub-divisions per cm, so base 10.

Step2: Measure Ruler A's object

The object ends at 2.2 cm, starts at 0.
Expression: $2.2 - 0 = 2.2$ cm

Step3: Analyze Ruler B (Metric/Base)

Ruler B uses centimeters (metric), 10 sub-divisions per cm, base 10.

Step4: Measure Ruler B's object

Object starts at 66, ends at 74.3 cm.
Expression: $74.3 - 66 = 8.3$ cm

Answer:

Ruler A:

A. Metric
B. Base unit of 10
C. 2.2 cm

Ruler B:

A. Metric
B. Base unit of 10
C. 8.3 cm