All the solutions provided in McGraw Hill My Math Grade 2 Answer Key PDF Chapter 11 Lesson 8 Select and Use Metric Tools will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 2 Answer Key Chapter 11 Lesson 8 Select and Use Metric Tools
Explore and Explain
Teacher Directions: Draw a picture of an object you would measure with a centimeter ruler in box 1. Draw a picture of on object you would measure with a meterstick in box 2.
Answer:
See and Show
A centimeter ruler measures smaller objects A meterstick measures larger objects. Circle the tool you would use to measure a lunchbox.
Find the object. Choose the tool and measure it. Explain why you chose that tool.
Question 1.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a meterstick.
It measures about 4 metres.
Question 2.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a meterstick.
It measures about 6 metres.
Question 3.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a centimeter ruler.
It measures about 10 centimeter.
Talk Math Can you measure a paper clip with a meterstick? Explain.
Answer:
Yes,but the measurements will not be accurate. So, accurate measurements can be obtained only by using a centimeter ruler.
On My Own
Find the object. Choose the tool and measure it. Explain why you chose that tool.
Question 4.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a centimeter ruler.
It measures about 2 centimeter.
Question 5.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a meterstick.
It measures about 8 metres.
Question 6.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a meterstick.
It measures about 7 metres.
Question 7.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a centimeter ruler.
It measures about 7 centimeter.
Question 8.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a centimeter ruler.
It measures about 10 centimeter.
Problem Solving
Question 9.
A wall in Jim’s garage is 5 meters long. He is painting 2 meters of the wall blue. He wants to paint the rest of the wall red. How many meters will he paint red?
_____________ meters
Answer:
Given that:
A wall in Jim’s garage is 5 meters long. He is painting 2 meters of the wall blue.
He can paint 5-2=3 meters of wall with red paint.
Question 10.
A sandbox is 300 centimeters long. How many meters long is it?
_____________ meters
Answer:
Given that:
A sandbox is 300 centimeters long.
We know that 1 meter = 100 centimeters.
So, to convert the centimeters to meters, divide the given centimeter measurement with 100.
Therefore, 300 centimeter will be 300÷100=3 meters.
Question 11.
Allison swam 50 meters in the morning. She swam 40 meters in the evening. How many meters did Allison swim in all?
_____________ meters
Answer:
Given that:
Allison swam 50 meters in the morning. She swam 40 meters in the evening.
The total number of metres she swans will be 50+40=90 meters.
Write Math Why do you need to know the customary and metric length?
Answer:
Customary system include inch, pound, foot, mile, cup and primarily used in United states.
Metric system include meter, liter and gram.
McGraw Hill My Math Grade 2 Chapter 11 Lesson 8 My Homework Answer Key
Practice
Find the object. Choose the tool and measure it. Explain why you chose that tool.
Question 1.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a meterstick.
It measures about 4 metres.
Question 2.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a centimeter ruler.
It measures about 17 centimeter.
Question 3.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a centimeter ruler.
It measures about 8 centimeter.
Question 4.
Object
Tool: ______________
Measure: about _______________
Answer:
The given object can be measured by using a meterstick.
It measures about 2 metres.
Question 5.
A tall slide at the pool is 10 meters high. A small slide is 4 meters high. How much higher is the tall slide?
_____________ meters
Answer:
Given that:
A tall slide at the pool is 10 meters high. A small slide is 4 meters high.
The tall slide is 10-4=6 meters higher than the small slide.
Question 6.
The hundred meter dash is marked with a blue line. The 400 meter dash is marked with a red line. How much farther is the red line?
_____________ meters
Answer:
Given that:
The hundred meter dash is marked with a blue line. The 400 meter dash is marked with a red line.
Red line is 400-100=300 meter farther than the blue line.
Test Practice
Question 7.
Eight meters is equal to ___________ centimeters.
(A) 400
(B) 600
(C) 800
(D) 900
Answer:
We know that 1 meter = 100 centimeters.
8 meters is equal to 8×100=800 centimeters.
So, option C is correct.
Math at Home Have your child identify objects he or she would measure using meters and centimeters.
Answer:
Compass box, tiffin box, slate, pencil and marker can be measured in centimeters.
Window,door,table,cupboard and sandbox can be measured in meters.