Addition and Subtraction Strip Diagrams and Word Problems

Abby drew this strip diagram.  What equation matches her strip diagram.

• 30 x 5 = C
• (30 x 5) + 11 = C
• (30 ÷ 5) + 11 = C
• 30 + 11 + 5 = C

What equation matches the strip diagram.

• (78 - 42) ÷ 3 = R
• (78 ÷ 3) - 42 = R
• 78 - (42 ÷ 3) =R
• R + 78 = 42

What equation matches the strip diagram?

• 36 - 9 = M
• 36 x M = 9
• 36 ÷ 9 = M
• M x 8 = 36

What equation matches the strip diagram 

• 137 + 5 = J
• 137 - 6 = J
• 137 ÷ 5 = J
• 137 x 5 = J

What equation matches the strip diagram?

• 874 - (301 + 521) = W
• (874 - 301) + 521 = W 
• 874 ÷ 3 = W
• 310 x 3 = W

What equation matches the strip diagram?

• 983 - 734 = 240
• 983 x 734 = S
• 983 + 734 + 240 = S
• 734 + 240 + S = 983

What equation matches the strip diagram?

• $7,362.36 - $4.892.49 = L
• $7,362.36 + $4.892.49 = L
• $4.892.49 - $7,362.36 = L
•  $7,362.36 + L = $4.892.49

What word problem does the strip diagram represent?

• Mrs. Moore bought 2 medium sized bags with M&M's that contained 80 M&M's each and 1 large bag that contains 250 M&M's.  How many total M&M's does she have?
• Mrs.  Moore has 250 M&M's.  She has 80 red M&M's and 80 blue M&M's.  How many green M&M's does she have?
• Mrs. Moore bought 3 bags of M&M's.  Each bag had 80 M&M's inside.  How many bags would she needs to buy in order to have 250 M&M's?
• Mrs. Moore had 250 M&M's.  She gave her class 80 M&M's and her switch class $80 M&M's.  How many M&M's does she have left?

Addition or Subtraction?

• Addition
• Subtraction

Addition or Subtraction?

• Addition
• Subtraction