Gus's Snack Cart — Add & Subtract Within 100 (Grade 2)

Grade 2·2.NBT.B.5

Gus the gopher runs a busy snack cart — he is always restocking and selling! Read each little story, look at the number sentence, and add or subtract within 100 to find the answer. Type it on the keypad. A Grade 2 math game about adding and subtracting two-digit numbers fluently, aligned to Common Core 2.NBT.B.5.

About this activity

Gus the gopher is always restocking and selling at his busy snack cart — he sold 45 nuts and gave 8 away, picked 23 berries and 15 more, packed 27 apples with 36 cherries — and the child reads each story, works out the sum or difference within 100, and types the answer on the keypad. It's an interactive Grade 2 math activity that runs right in the browser, with nothing to install and no account.

The big idea is fluency with two-digit addition and subtraction, including problems that cross a ten — 27 + 36, 19 + 47, 45 − 8, and 60 − 25 all need regrouping, while 23 + 15 and 70 − 40 do not. Because the answer is typed rather than chosen from options, there is no guessing from a list: the child has to actually compute. Wrapping each problem in a real selling-and-restocking story keeps the arithmetic meaningful instead of abstract.

It is aligned to Common Core 2.NBT.B.5 — fluently adding and subtracting within 100 using strategies based on place value and the properties of operations. No timer, no score — just calm, playful practice.

What's inside this activity

  • Designed for Grade 2 learners (ages about 7–8)
  • Common Core strand: Number & Operations in Base Ten
  • Aligned to Common Core standard 2.NBT.B.5

How to play

Read Gus's snack-cart story and look at the number sentence — is he adding or taking away?

Work out the answer within 100, then type it on the keypad and press Check.

Not quite? Try again as many times as you like — there is no timer and no score.

What your child practices

  • Adding two-digit numbers within 100, including sums that cross a ten
  • Subtracting two-digit numbers within 100, including problems that need regrouping
  • Pulling the numbers and the operation out of a short word problem
  • Typing an exact answer instead of picking from a list of choices

Learning goals

Add and subtract two-digit numbers within 100 fluently — the focus of Common Core 2.NBT.B.5

Decide whether a story calls for adding or subtracting before computing

Build the place-value strategies that make regrouping feel natural

Frequently asked questions

What does the Gus's Snack Cart — Add & Subtract Within 100 (Grade 2) activity teach?
Gus's Snack Cart — Add & Subtract Within 100 (Grade 2) is an interactive activity for Grade 2, focused on Number & Operations in Base Ten. Children play it right in the browser — no printing, login, or setup required.
Which ages is this activity for?
It is designed for Grade 2 (Number & Operations in Base Ten) and works well for whole-class, small-group, or independent practice.

Practice this standard

See all 2.NBT.B.5 activities

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