Estimate, calculate exactly, and check whether the answer makes sense.
Estimate and Check is the game. Estimate, calculate exactly, and check whether the answer makes sense. Watch shows 48 + 23 = 71, then 36 + 27 = 63, then 62 − 18 = 44, then 51 − 26 = 25. About 50 + 20 = 70. Which is exact? Tap 71. The About line stays, so 71 sits near 70. Try it. Then six scored problems. Score, Streak, and hearts start after Try it. Built for 2nd grade.
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How to Play Estimate and Check
Watch
Watch. Estimate, calculate exactly, and check whether the answer makes sense. 48 + 23 = 71, then 36 + 27 = 63, then 62 − 18 = 44, then 51 − 26 = 25. About 50 + 20 = 70. Which is exact? 71.
Try it
Try it. Estimate, calculate exactly, and check whether the answer makes sense. About stays on the board. Which is exact? Tap the exact number. 48 + 23 = 71. 62 − 18 = 44. The equation stays until you go on. The hearts stay hidden through Try it.
Estimate and Check
Estimate and Check. Estimate, calculate exactly, and check whether the answer makes sense. Six new problems. About. Which is exact? 36 + 27 = 63. 51 − 26 = 25.
Score
A finished problem adds Score and Streak. The wrong number clears the Streak and costs a heart. Three misses and the run is Done. Again starts over. Best is saved. Sound and Mute sit on the bar. A higher Score is a New best.
Key Features
Estimate, calculate exactly, and check whether the answer makes sense.
Watch. 48 + 23 = 71. 36 + 27 = 63. 62 − 18 = 44. 51 − 26 = 25. About. Which is exact? Tap the exact number. Try it. Estimate, calculate exactly, and check whether the answer makes sense.
48 + 23 = 71
About 50 + 20 = 70. Which is exact? 71 is exact. 70 is the About number, not the exact answer. Tap 71. The blocks of 71 arrive. The About line stays, so 71 sits near 70.
36 + 27 = 63
About 40 + 30 = 70. Which is exact? Tap 63. 70 does not fit the real cards. 63 is near 70, so the answer makes sense.
62 − 18 = 44
About 60 − 20 = 40. Which is exact? Tap 44. 51 − 26 = 25 is the other story: About 50 − 30 = 20, and 25 is exact.
Score and Streak
Score and Streak wait until after Watch and Try it. A finished problem adds Score and grows the Streak. The wrong number shakes the board, clears the Streak, and costs a heart. Three misses and the run is Done.
Best
Best is kept on this device. A higher Score at the end is a New best. Again starts a new run. Sound and Mute sit on the bar.
What is Estimate and Check?
Estimate and Check is a 2nd grade game. Estimate, calculate exactly, and check whether the answer makes sense. Watch 48 + 23 = 71, 36 + 27 = 63, 62 − 18 = 44, and 51 − 26 = 25. About. Which is exact? Try it.
Why Play Estimate and Check?
About
Estimate, calculate exactly, and check whether the answer makes sense. About 50 + 20 = 70. The amber cards are the rounded tens.
Which is exact?
Which is exact? 48 + 23 = 71. 70 is About, not the exact answer. 71 sits near 70, so the answer makes sense.
A miss you can feel
The wrong number shakes the board and puts the problem back. A finished problem adds Score.
Frequently Asked Questions
How do I estimate, calculate exactly, and check whether the answer makes sense?
Watch 48 + 23 = 71, 36 + 27 = 63, 62 − 18 = 44, and 51 − 26 = 25. Then Try it. About shows the rounded tens. Which is exact? Tap that number. It should sit near the About number.
What does About mean?
About is the rounded problem. 48 + 23 becomes About 50 + 20 = 70. 62 − 18 becomes About 60 − 20 = 40. The About number stays on the board.
Which is exact for 48 + 23?
71. About 50 + 20 = 70. 71 is exact, and it sits near 70.
Which is exact for 62 − 18?
44. About 60 − 20 = 40. 44 is exact, and it sits near 40.
How does Score work?
Score and Streak start after Watch and Try it. A finished problem adds Score. The Streak makes the next problem worth more. The wrong number clears the Streak. Best is saved. A higher Score at the end is a New best. Again starts a new run. Three misses and the run is Done.
Where are Sound and Mute?
Sound and Mute sit on the bar. Tap the button to switch.
Who is Estimate and Check for?
Estimate and Check is for 2nd grade. Estimate, calculate exactly, and check whether the answer makes sense.