Adding and Subtracting Length

What is the length of the key?

• 2 cm

• 0 cm

• 4 cm

• 1 cm

Addition is the process or skill of ------ the total of two or more numbers together

(a)  

• adding

• subtraction

Match the following math problems

• 60

• 15 - 15 =

• 23

• 48 + 12 =

• 26

• 14 + 9 =

• 0

• 12 + 14 =

• 69

• 77 - 8 =

Match the following math problems

• 23

• 19 + 12 =

• 31

• 15 - 7 =

• 47

• 37 + 10 =

• 8

• 25 - 11 =

• 14

• 19 + 4 =

Grace made a scarf by knitting red and white yarn. The red section was 148 cm long. The white section was 185 cm long. After kitting the sections together, Grace realized the scarf was too long. She took out 34 cm of stitches. What is the length of Grace’s finished scarf (in cm)?

Mathematical Equivalence

OFF

Subtraction is the skill of ----------- one number away from another number

​ ​

(a)   ​

• subtracting

• adding

Gabriel has 47 dollars. He spends 8 dollars at HEB. How many dollars does Gabriel have left?

Camila had 839 legos. She gave 201 to her cousin. How many legos does Camila have left?

Sophia has 47 feet of rope. She uses 9 feet for a project. How many feet of rope does she have left?

Marissa has 23 bracelets, Julie has 15, and Natalynn has 20. If the three girls combine their bracelets how many do they have in total?

• 58

• 49

• 50

• 68