Share 5th Grade Module 1: EngageNY
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Researchers counted 8,912 monarch butterflies on one branch of a tree at a site in Mexico. They estimated that the total number of butterflies at the site was 1,000 times as large. About how many butterflies were at the site in all?
8,912,000 monarch butterflies
A student used his place value chart to show a number. After the teacher instructed him to divide his number by 100, his place-value chart showed 28.003. What was the original number he divided by?
2,800.3
On a map, the perimeter of a park is 0.251 meters. The actual perimeter of the park is 100 times as large. What is the actual perimeter of the park?
25.1 meters
A student used his place value chart to show a number. After the teacher instructed him to multiply his number by 10, the chart showed 3,200.4. What was the original number on the place value chart?
320.04
345 ÷ 100 = ____________
3.45
3.452 × 100 = _________
345.2
A microscope has a setting that magnifies an object so that it appears 100 times as large when viewed through the eyepiece. If a tiny insect is 0.095 cm long, how long will the insect appear in centimeters through the microscope?
9.5 centimeters
345 ÷ 1,000 = _____________
0.345
684 ÷ 1,000 = ____________
684,000
6.671 × 100 = ____________
667.1
Janice thinks that 20 hundredths is equivalent to 2 thousandths because 20 hundreds is equal to 2 thousands. Use words and a place value chart to correct Janice’s error.
Use place-value chart.
Canada has a population that is about 1/10 as large as the United States. If Canada’s population is about 32 million, about how many people live in the United States? Explain the number of zeros in your the answer.
Canada has 3,200,000 people.
Ted says that 3 tenths multiplied by 100 equals 300 thousandths. Is he correct?
No. 3 tenths multiplies by 100 equals 300 thousandths.
Write the following in exponential form. 10,000 = __________
10^4
Write the following in exponential form. 1,000 = _________
10^3
Write the following in exponential form. 10 × 10 = __________
10^2
