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Lesson 2: Adding and Subtracting Decimals



 1. 

Regroup to select the correct sum of the decimals represented by the base ten blocks.

Ones
.
Tenths
Hundredths
Thousandths
mc001-1.jpg mc001-2.jpgmc001-3.jpgmc001-4.jpgmc001-5.jpgmc001-6.jpgmc001-7.jpgmc001-8.jpgmc001-9.jpgmc001-10.jpgmc001-11.jpgmc001-12.jpgmc001-13.jpgmc001-14.jpgmc001-15.jpgmc001-16.jpg
  mc001-17.jpgmc001-18.jpgmc001-19.jpgmc001-20.jpgmc001-21.jpgmc001-22.jpgmc001-23.jpgmc001-24.jpgmc001-25.jpgmc001-26.jpgmc001-27.jpg
mc001-28.jpg mc001-29.jpgmc001-30.jpgmc001-31.jpgmc001-32.jpgmc001-33.jpg mc001-34.jpgmc001-35.jpgmc001-36.jpgmc001-37.jpgmc001-38.jpgmc001-39.jpgmc001-40.jpg
a.
2.377
b.
3.487
c.
4.487
d.
3.377
 

 2. 

Regroup to select the correct sum of the decimals represented by the base ten blocks.

Ones
.
Tenths
Hundredths
Thousandths
mc002-1.jpgmc002-2.jpg mc002-3.jpgmc002-4.jpgmc002-5.jpgmc002-6.jpgmc002-7.jpgmc002-8.jpgmc002-9.jpgmc002-10.jpgmc002-11.jpg mc002-12.jpgmc002-13.jpg
mc002-14.jpg  mc002-15.jpgmc002-16.jpgmc002-17.jpgmc002-18.jpgmc002-19.jpgmc002-20.jpgmc002-21.jpgmc002-22.jpgmc002-23.jpgmc002-24.jpgmc002-25.jpgmc002-26.jpg
mc002-27.jpgmc002-28.jpg mc002-29.jpgmc002-30.jpgmc002-31.jpgmc002-32.jpgmc002-33.jpgmc002-34.jpgmc002-35.jpgmc002-36.jpgmc002-37.jpgmc002-38.jpgmc002-39.jpgmc002-40.jpgmc002-41.jpgmc002-42.jpgmc002-43.jpgmc002-44.jpgmc002-45.jpgmc002-46.jpg
a.
6.157
b.
5.057
c.
5.157
d.
6.057
 

 3. 

Select the correct estimate for the following sum.
2.625 + 1.407 + 1.721
a.
6.700
b.
5.700
c.
4.700
d.
7.700
 

 4. 

Select the correct estimate for the following sum.
1.046 + 2.739 + 1.583
a.
5.300
b.
4.300
c.
6.300
d.
3.300
 

 5. 

Regroup to select the correct difference of the decimals represented by the base ten blocks.

Ones
.
Tenths
Hundredths
Thousandths
mc005-1.jpg    
  mc005-2.jpgmc005-3.jpgmc005-4.jpgmc005-5.jpgmc005-6.jpgmc005-7.jpg mc005-8.jpgmc005-9.jpgmc005-10.jpgmc005-11.jpgmc005-12.jpgmc005-13.jpgmc005-14.jpgmc005-15.jpg
a.
0.492
b.
0.408
c.
0.392
d.
0.292
 

 6. 

Select the correct difference for the following equation.
    15.000 mc006-1.jpg 8.846
a.
5.154
b.
7.154
c.
7.254
d.
6.154
 

 7. 

Hassan had to run a total of 10 km. During the first hour he ran 3.75 km, during the 2nd hour he ran 3.15 km, during the third hour he ran 2.85 km. How far has he run so far?
a.
8.75 km
b.
9.75 km
c.
9.25 km
d.
8.25 km
 

 8. 

How much farther does Hassan, from question 7, have left to run?
a.
0.25 km
b.
1.25 km
c.
0.75 km
d.
1.75 km
 

 9. 

Lucia would like to place a fence around a rectangular garden that is 0.150 km long and 0.100 km wide. How much fencing does she need?
a.
0.500 km
b.
0.250 km
c.
0.300 km
d.
0.450 km
 

 10. 

If Lucia, from question 9,  buys 0.750 km of fencing for her garden, how much will she have left?
a.
0.450 km
b.
0.300 km
c.
0.500 km
d.
0.250 km
 



 
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