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by BlastRoom
Estimate first with rounding and compatible numbers, then judge whether an answer is reasonable.
#estimation#us_grade_4_math
40 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
Round 412 to the nearest hundred, then multiply by 8. What is the estimate?
Rounding 38 x 52 to the nearest ten gives 40 x 50. What is that estimate? ___
Maya says 6,842 - 2,197 is about 4,600. Which rounded subtraction gives her estimate?
Rounding 3,500 to the nearest thousand gives 3,000.
Ana estimates 5,879 divided by 7 using compatible numbers. She uses 5,600 divided by 7. What is her estimate? ___
Estimate 47 x 19 by rounding each factor to the nearest ten. What is the estimate? ___
Round 472,681 to the nearest ten thousand. ___
Round 89,632 to the nearest thousand.
To estimate 6 x 483, rounding 483 to 500 gives an estimate of 3,000.
Round 21 and 18 each to the nearest ten. Estimate the cost of 21 boxes of markers at $18 each.
Round 7,438 to the nearest hundred. ___
Round 65,209 to the nearest ten thousand.
Round 348,500 to the nearest hundred thousand. ___
Round 3,796 to the nearest ten.
Round 149,762 to the nearest thousand.
Round 84,650 to the nearest hundred. ___
Rounded to the nearest ten thousand, 46,500 is 50,000.
Which number rounds to 5,000 when it is rounded to the nearest thousand?
A stadium holds 28,461 fans. Rounded to the nearest thousand, about how many fans is that?
Round 592 to the nearest hundred, then multiply by 7. About how much is 592 x 7?
Estimate 63 x 28 by rounding each factor to the nearest ten. What is the estimate? ___
Estimate 8 x 3,150 by rounding 3,150 to the nearest thousand.
Estimate 512 + 289 by rounding each number to the nearest hundred.
Estimate 4,812 + 3,265 by rounding each number to the nearest thousand. ___
Estimate 7,204 - 2,860 by rounding each number to the nearest hundred.
Estimate 9,035 - 4,780 by rounding each number to the nearest thousand. ___
Estimate 4,235 divided by 6 with compatible numbers. Use 4,200 divided by 6. What is the estimate?
Use compatible numbers to estimate 3,178 divided by 8. Use 3,200 divided by 8. The estimate is ___.
Which pair of compatible numbers gives the best estimate for 552 divided by 7?
Jon says 38 x 41 = 1,558. Which rounded multiplication shows his answer is reasonable?
Lea added 3,847 + 2,196 and got 5,043. Is her answer reasonable?
Sam multiplied 385 x 9. Rounding 385 to the nearest hundred, about how much should his answer be?
An estimate of 6,000 shows that an answer of 5,948 is reasonable.
Rounding 62,483 to the nearest hundred gives 62,400.
Estimate 2,850 divided by 6 with compatible numbers. Use 3,000 divided by 6. The estimate is ___.
A truck carries 1,880 kilograms. Round the mass to the nearest hundred kilograms. ___
A tablet costs $189. Round to the nearest hundred dollars to estimate the cost of 6 tablets.
Which number rounds to 60,000 when it is rounded to the nearest ten thousand?
A number rounds to 4,300 when it is rounded to the nearest hundred. Which number could it be?
A school raised $3,462. Round the amount to the nearest thousand dollars. ___
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
Number Patterns and Input-Output Tables
40 questions
