Place Value & Regrouping
Add.
What is 3,482 + 1,219?
4,701
A library had 4,325 books. They bought 278 more. How many books now?
4,603
Add.
What is 4.3 + 2.4?
6.7
Add.
What is 1/2 + 1/4?
3/4
Quick add.
What is 59 + 40?
99
Subtract. What is 7,305 − 2,478?
4,827
A factory made 2,475 toys on Monday and 3,198 on Tuesday. How many toys in total?
5,673
Subtract.
What is 7.25 − 3.8?
3.45
Subtract.
What is 5/6 -1/3?
3/6 or 1/2
Round and estimate.
Estimate the sum of 4,398 + 6,117 by rounding each to the nearest hundred.
10,500
Add with regrouping.
What is 48,376 + 25,789?
74,165
A school fundraiser raised $5,640. After expenses of $1,287, how much remains?
$4,353
Add.
What is 12.47 + 5.306? (align decimals properly)
17.776
Add unlike denominators.
What is 2/3 + 1/4? (Simplify the answer.)
11/12
Fast subtraction.
What is 1,000 − 347 using mental strategies?
653
Subtract across zeros.
What is 10,000 − 4,327?
5,673
A delivery truck carried 12,500 lb of goods. It delivered 3,875 lb in the morning and 4,290 lb in the afternoon. How many pounds remain on the truck?
4,335 lb remaining
Subtract with borrowing.
What is 20.00 − 13.756?
6.244
Subtract unlike denominators.
What is 7/8 − 1/6? (Simplify.)
17/24
Estimate difference.
Estimate 8,764 − 2,532 by rounding to the nearest thousand or hundred (state which you used).
nearest thousand: 6,000
nearest hundred: 6,300
Multi-step place-value.
Add 6,789 + 14,567 + 3,245.
24,601
A museum sold 8,432 tickets in a year. They had 1,279 returns/refunds. Later they sold another 2,311 tickets. What is the final number of tickets sold (after subtracting returns then adding new sales)?
9,464 tickets
Multi-step decimals.
Start with 45.678, add 3.4, then subtract 12.089. What is the result?
36.989
Mixed numbers.
What is 3 1/2 + 2 2/3 - 1 3/4?
(Show steps and simplify.)
4 5/12
Challenge mental addition.
Without paper, add 4,875 + 3,699 + 2,426 (you may break numbers to make mental regrouping easier).
11,000