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by BlastRoom
Use mental math and rounding to decide whether answers are sensible.
#us_grade_7_math
20 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.
Which is the best estimate for 19.8 × 3.1 using rounded numbers?
Estimate 397 ÷ 19 by rounding to nearby friendly numbers.
What is a reasonable estimate for 48.6 + 151.2?
Use rounding to estimate 7.9 × 12.2.
What is the best estimate for 298.4 − 102.7?
Estimate 0.49 × 81.6 using mental math.
Use rounded numbers to estimate 63.8 ÷ 7.9.
What is a good estimate for 11.7 × 29.6?
A student says 58.9 × 4.2 = 247.38. Is this answer reasonable?
A student says 315 ÷ 9.2 = 3.4. Is this answer reasonable?
A student says $42.75 + $18.10 = $70.85. Is this answer reasonable?
A student says 8.8 × 19.6 = 172.48. Is this answer reasonable?
A student says 96.1 ÷ 3.1 = 310. Is this answer reasonable?
A student says −12.4 + 18.9 = 6.5. Is this answer reasonable?
A 2.9 kg bag of rice costs $11.70. About how much is the cost per kilogram?
A 48.5 cm ribbon is cut into 5 equal pieces. About how long is each piece?
A cyclist travels 179 km in 3 hours. About how many kilometers per hour is that?
Paint covers 32.4 square meters per liter. About how many square meters will 6.1 liters cover?
A recipe uses 0.48 liter of juice per pitcher. About how many liters are needed for 19 pitchers?
A class collects $199.50 over 4 fundraisers. About how much did it collect per fundraiser?
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.
Scale Factor and Redrawing at a New Scale
40 questions
