This subtract within 100 worksheet for 2nd Grade covers subtracting within 100 (Common Core 2.NBT.B.5, 2.NBT.B.9), with a free PDF to print.
These 22 problems practice subtracting within 100 (Common Core 2.NBT.B.5 and 2.NBT.B.9). Start with tens and ones that need no trading, then trade a ten, count back, count up, and use bar models. The last six problems are word problems, and a few ask you to explain why a strategy works.
Grade 2 · Common Core State Standards: 2.NBT.B.5, 2.NBT.B.9
Subtract within 100 worksheet: exercises 1 to 10
Exercise 1 – Subtract tens
Find \(68 – 30\).
Exercise 2 – No trade needed
Find \(79 – 35\).
Exercise 3 – Use the blocks
The blocks show 53. Find \(53 – 28\).
Blocks for 53.
Exercise 4 – Trade a ten
Find \(41 – 16\).
Exercise 5 – Count back
Find \(86 – 49\) by counting back on the number line.
Start at 86.
Exercise 6 – Zero ones
Find \(70 – 34\).
Exercise 7 – Subtract from a ten
Find \(90 – 58\).
Exercise 8 – Missing part
The bar model shows 64 split into 29 and a missing part. Find the missing number.
Whole 64, parts 29 and ?.
Exercise 9 – Count up
Find \(83 – 57\) by counting up from 57.
Mark 57 and 83.
Exercise 10 – Check with addition
Find \(62 – 38\). Then add to check the answer.
Exercises 11 and up
Exercise 11 – Compare differences
Compare \(92 – 47\) and \(81 – 39\). Which difference is greater, and by how much?
Exercise 12 – Find the error
Maya wrote \(71 – 45 = 34\). Explain her mistake and find the correct difference.
Exercise 13 – Blocks for 95
The blocks show 95. Find \(95 – 68\).
Blocks for 95.
Exercise 14 – Explain the trade
Write 73 as tens and ones after trading 1 ten for 10 ones. Then find \(73 – 46\).
Exercise 15 – Take away a little extra
Explain why \(78 – 19\) has the same answer as \(78 – 20 + 1\). Then find the difference.
Exercise 16 – Add to subtract
Find the number that makes \(37 + ? = 52\) true. Explain how this is the same as \(52 – 37\).
Exercise 17 – Sticker book
Solve. Jamal had 84 stickers in his book. He gave 37 stickers to his cousin. How many stickers does Jamal have now?
Exercise 18 – Apple stand
Solve. A farmers market stand had 96 apples. It sold 58. The bar model shows the apples. How many apples are left?
96 apples in all.
Exercise 19 – Ball game
Solve. There were 72 fans at a Little League game. Then 29 fans went home. How many fans are still at the game?
Exercise 20 – Bead bracelets
Solve. Priya had 65 beads. She used 28 beads on a bracelet and 19 beads on a necklace. How many beads does she have left?
Exercise 21 – Pages read
Solve. Diego read 91 pages this week. Aisha read 67 pages. How many more pages did Diego read? The number line shows both numbers.
Aisha read 67 and Diego read 91.
Exercise 22 – Cookie sale
Solve. A school bake sale started with 95 cookies. The class sold 48 cookies. Find how many are left, then add to check.
Key facts behind this subtract within 100 worksheet
Key facts
Trade 1 ten for 10 ones when the ones on top are too few.
The difference is the answer to a subtraction problem.
Counting back and counting up both find the same difference.
Check subtraction with addition: difference + smaller number = whole.
A bar model shows a whole and two parts.
How to use this subtract within 100 worksheet
Work through the exercises in order: they go from simple to challenging. Write every step on paper, then compare with the solutions page and redo any exercise you missed the next day.
