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 a free 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.

Is Gus's Snack Cart — Add & Subtract Within 100 (Grade 2) free to use?

Yes. Gus's Snack Cart — Add & Subtract Within 100 (Grade 2) is completely free, with no signup and no paywall, on any tablet, laptop, or classroom whiteboard.

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.

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

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.

Grade 2·Number & Operations in Base Ten·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 a free, 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 a free 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.
Is Gus's Snack Cart — Add & Subtract Within 100 (Grade 2) free to use?: Yes. Gus's Snack Cart — Add & Subtract Within 100 (Grade 2) is completely free, with no signup and no paywall, on any tablet, laptop, or classroom whiteboard.
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