Writing Subtraction Number Sentences

Understanding Addition and Subtraction

review

 

checkmark Check for Understanding
Complete the Do you understand? question on page 12.

 


IText button  enVisionMATH 2


Lesson Guide

Check for Understanding

Have your student answer the Do you understand?  question on page 12.

Tip: Have your student draw a picture of a simple subtraction story. Check the picture, then ask him to write the sentence that represents the story.
Pearson_logo_small


Optional Differentiated Activities

You may choose from the following selection of activities to provide your student with additional practice or extension.

Practice
Have your student complete the following activities.
  • Practice 1–3 in the enVisionMATH 2 Interactive Homework Workbook.
  • Daily Spiral Review 1–3, which can be found in the Unit Resource Packet by clicking on the backpack icon.

Reteaching
Share a household situation to model a subtraction sentence to find the difference.
Pearson_logo_small

Intervention
Missing Numbers (10 min)
Materials: mouse4  part-part-whole mat, 12 connecting cubes, 1 sheet of paper
  • Display a train with 12 connecting cubes to your student.
  • Have your student close his eyes. Break the train into 2 trains of 8 and 4. Place each train on a part-part-whole mat. Hide the 4 cube train with a sheet of paper.
  • Have your student open his eyes. Ask him to begin the subtraction sentence that represents the cube story. [ 12 – 8 = ] Ask how many cubes are missing. [ 4] Reveal the hidden cubes if they have difficulty deciding how many cubes are missing.
  • Repeat with a different sentence.

Pearson_logo_small

On-Level
Helping Hands (10 min)
Materials:  mouse4  number tiles (0 to 9), a paper bag,  mouse4  Center Activity 1–3*

On each turn, a player picks a tile to show how many seeds will be taken from a seed packet that contains six seeds. That player uses fingers to show how many seeds will be left in that packet. That player's partner says a subtraction sentence that includes the number of seeds taken out of the packet and the number of seeds remaining in the packet.
Pearson_logo_small

Advanced
Helping Hands (10 min)
Materials:  mouse4  number tiles (0 to 9), a paper bag, mouse4  Center Activity 1–3**

On each turn, a player picks a tile to show how many seeds will be taken from a seed packet containing 12 seeds. That player uses fingers to show how many seeds will be left in that packet. That player's partner says a subtraction sentence that includes the number of seeds taken out of the packet and the number of seeds remaining in the packet.

Talk about how this activity is like removing eggs from a carton of 12 eggs.
Pearson_logo_small

Extension
With 8 cubes in a bag, reach in and take 0 cubes out. How many cubes are still in the bag?  [ 8What number sentence shows this?  [ 8 – 0 = 8
Pearson_logo_small