Unit 2 · Standard 6.NOS.3
Add and Subtract Decimals
My Notes Level 1 Support Level 2 Standard Level 3 Enrichment
Today's objectives
Content Objective: I can add and subtract decimals by lining up the place values and the decimal points.
Language Objective: I can explain my steps using the words decimal, place value, tenths, hundredths, and add zeros.
📖 See Learn It for the explanation and worked examples, and the Vocab tab for the words. These are your notes to fill in and keep.
✏️ Fill in each blank as we go. Use the Word Bank to help you.
👆 Tap any word to see its meaning and a picture.
Level 3: try the blanks from memory first, then check the bank.
- 1A number that uses a point to show a value less than one whole is a .
- 2The value a digit has based on its position in a number is its .
- 3The first place to the right of the decimal point is the place.
- 4The second place to the right of the decimal point is the place.
- 5Writing extra zeros at the end of a decimal so the places line up is called .
Write About the Math
How do you add decimals with different numbers of decimal places to find her total time?¿Cómo sumas decimales con distinta cantidad de lugares decimales para hallar su tiempo total?
Say your answer to a partner first. Then write it, using at least two of these words:
Model: Lining up the decimal points keeps each place value matched. — Students explain that aligning decimal points lines up matching place values (tenths under tenths, hundredths under hundredths) so the addition and subtraction are correct.
Start
Complete the frames. Use the word bank.Completa las oraciones. Usa el banco de palabras.
- The runner's total time is ___ minutes because 2.45 + 2.60 + 2.38 = ___.
- My answer is ___ because ___.Mi respuesta es ___ porque ___.
Build
Write two connected sentences. Use because, so, or but.Escribe dos oraciones conectadas. Usa porque, entonces o pero.
- My claim is ___.Mi afirmación es ___.
- My evidence is ___, so ___.Mi evidencia es ___, entonces ___.
Explain
Write a claim, give math evidence, and explain your reasoning.Escribe una afirmación, da evidencia matemática y explica tu razonamiento.