3.1 Model Decimals
Color a 10-by-10 square grid for each whole number in a decimal
=2
=1
Color a 10-by-1 square strip for each tenth in a decimal
= 0.1
1 tenth
= 0.4
4 tenths
Color a small square for each hundredth in a decimal
= 0.01
1 hundredth
= 0.06
6 hundredths
3.1 Practice
Write the decimal that is represented by each model.
1.
2.
= ______________
=__________
3.
= ______________
Check your answers:
1. 24 hundredths squares are shaded. So the model represents 0.24
2. 1 whole grid and 7 columns are shaded. So the model represents 1.7
3. 2 whole grids and 36 hundredths squares are shaded. So the model represents 2.36
3.1 On Your Own – Model Decimals
1. Use a decimal grid to model 0.3 and 0.30.
Explain how a decimal grid can show that 0.30 = 0.3.
_______________________________________________________________________________________________
_______________________________________________________________________________________________
Write the decimal that is represented by each model.
2. ________________
3. _______________
4. ________________________
Use a decimal grid to model each decimal.
5. 0.42
7. 2.75
6. 1.88
8. 0.5