Addition with Regrouping: 172 + 89

Addition with Regrouping Calculator

What is 172 + 89?

Answer

172 + 89 =

261

With regrouping: 2 carries — into the tens and the hundreds

172 + 89 in a column. Carries are the small circled digits above the columns.
		1carry	1carry
		1	7	2
	+		8	9
		2	6	1

Column by column: 172 + 89

Ones: 2 + 9 = 11 — write 1, carry 1.
Tens: 7 + 8 + 1 = 16 — write 6, carry 1.
Hundreds: 1 + 1 = 2 — write 2.

172 + 89 = 261

Second check: 261 − 172 = 89

Similar examples to practise

Related Calculations

261 − 89 = 172 - Subtraction with Regrouping

See Also

Subtraction with Regrouping Calculator - Column subtraction step by step, with borrowing across zeros
Long Multiplication Calculator - Column multiplication with partial products, step by step
Long Division Calculator - Step-by-step long division with detailed explanation
Adding Fractions Calculator - Add fractions, mixed numbers and whole numbers step by step

Recalculate with different values ↑

Column additions with 89

Example	Sum
89 + 89	178
92 + 89	181
94 + 89	183
98 + 89	187
105 + 89	194
111 + 89	200
136 + 89	225
172 + 89	261
203 + 89	292
211 + 89	300
239 + 89	328
268 + 89	357
307 + 89	396
348 + 89	437
376 + 89	465
402 + 89	491
453 + 89	542
485 + 89	574
536 + 89	625
578 + 89	667

FAQ

What is 172 + 89?

172 + 89 = 261

How do you check that 172 + 89 = 261?

Subtract one addend from the sum: 261 − 89 = 172, and 261 − 172 = 89. Getting the other addend back means the sum is right.

How many carries are there in 172 + 89?

2 carries: every time a column added up to 10 or more, its ones digit was written and 1 was carried to the next column on the left.

Is 89 + 172 the same as 172 + 89?

Yes. Addition is commutative, so both give 261; the column looks the same with either number on top.

See Also