Mental Math Add or Subtract 10 or 100

Mental Math Add or Subtract 10 or 100

Description: Online Worksheet for CCSS.Math.Content.2.NBT.B.8 Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.

Tags: CCSS.Math.Content.2.NBT.B.8 2nd Grade, 2nd grade math, Addition, Subtraction

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Question 1 (Short Answer, 10 points)

On Monday, the bakery made 150 pretzels. If they decide to bake an additional 100 on Tuesday, how many pretzels would the bakery have in total?






Question 2 (Short Answer, 10 points)

There are 200 cookies in the bakery. If they sold 10, how many cookies are left in the bakery?





Question 3 (Short Answer, 10 points)

The bakery started with 500 bread loaves. If they baked 100 more, how many would they have in total?





Question 4 (Short Answer, 10 points)

The bakery made 800 donuts for a big event. If they had to take 10 back, how many donuts are they left with?



Question 5 (Short Answer, 10 points)

The bakery has 300 rolls. If they decided to make 100 more, how many rolls would they have?



Question 6 (Short Answer, 10 points)

If the bakery starts with 700 cakes and they sell 100, how many cakes do they have left?



Question 7 (Short Answer, 10 points)

The bakery made 600 smores for a camping event. If they made another 10, how many smores would they have altogether?





Question 8 (Short Answer, 10 points)

The bakery has 400 marshmallows. If they decide to make 100 more, how many marshmallows would they have in total?





Question 9 (Short Answer, 10 points)

If the bakery baked 900 loaves of bread and sold 100, how many loaves of bread are left?





Question 10 (Short Answer, 10 points)

The bakery made 100 doughnuts for the day. If they decide to bake another 10, how many doughnuts would the bakery have in total?