3 scores max per player; No foul language, show respect for other players, etc.
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Scoring is :
Hit target : +10
Hit bomb : -5
Right answer : +50
Wrong answers : -20
Game: UXO
Aim: Knock out the targets, avoid the bombs
Method:
Click or tap and hold to destroy the objects while avoiding the bombs. When you knock out all 10 targets, you must answer the question to continue to the next level. There is a time limit of 30 seconds to get all 10 targets or you lose 50 points.
Scoring is :
Hit target : +10
Hit bomb : -5
Right answer : +50
Wrong answers : -20
anonymous
"Place value names: 4-digits"
UXO game to practice
'3-digit number plus multiple of 10' for 2nd grade
2nd grade / Addition / Mental calculations / 3-digit number plus multiple of 10
Mental calculations: 3 digit numbers plus tens
Learn how to add multiples of ten to 3 digit numbers
When we want to add a smaller number to a bigger number, there are sometimes shortcuts that make it easier. If the smaller number is 10 or a multiple of 10, adding that number to a bigger number just means increasing the tens column of the bigger number by the number of tens you are adding.
So, for instance, if you want to add:
248 + 30
all you need to do is add 3 to the tens column value which is 4, so you get 7 for the tens column. The rest of the big number stays the same, so the total addition looks like this:
248 + 30 = 278
In the same way, adding 419 and 70 gives:
419 + 70 = 489
It is the same idea if you want to add hundreds to 3 digit numbers but this time you would add to the hundreds column value by the number of hundreds you want to add. Adding units is often just going to affect the units column, so for instance, 271 + 5 = 276 because all we had to do was add 5 to the units column value to get an answer.
With our UXO math game you will be practicing the topic "3-digit number plus multiple of 10" from 2nd grade / Addition / Mental calculations. The math in this game consists of 16 questions that ask you to use mental calculations to add the given number of tens to a three-digit number.
Mental calculations: adding units, tens and hundreds to 3 digit numbers
Learn how to add units, tens and hundreds to 3 digit numbers with the sub-category "Mental calculations"
3 topics:
Three digit number plus units
Three digit number plus tens
Three digit number plus hundreds
Sometimes in math the most useful skill you can have is to be able to do complicated sums in your head, but don't worry, it's not magic, there's are techniques you can learn.
When we want to add a smaller number to a bigger number, there are sometimes shortcuts that make it easier. If the smaller number is 10 or a multiple of 10, adding that number to a bigger number just means increasing the tens column of the bigger number by the number of tens you are adding.
So, for instance, if you want to add:
30 + 248
all you need to do is add 3 to the tens column value which is 4, so you get 7 for the tens column. The rest of the big number stays the same, so the total addition looks like this:
30 + 248 = 278
It is the same idea if you want to add hundreds but this time you would add to the hundreds column value by the number of hundreds you want to add. Adding units is often just going to affect the units column, so for instance, 271 + 5 = 276 because all we had to do was add 5 to the units column value to get an answer.
UXO is a fun game to learn math where you attempt to knock over all the target objects while avoiding clicking / tapping on the bombs.
After each level, win an additional 50 points by correctly answering a math question from your selected topic. Wrong answers lose you 20 points but you can answer multiple times. Each level lasts 30 seconds: if you haven't cleared all the targets in that time, you lose 50 points. High scores can be added to the UXO leaderboards.
Notes
- This is a fast-paced game of clicking or dragging over moving targets.
- Also suitable for tablets and mobiles (it's actually easier than with a mouse)
- Answer math questions correctly for a higher score
- Hit all the targets in 30 seconds or you lose points.
Attributions
Music : Robotertanz by Shane Ivers
Images sourced from Pixabay by the following artists:
UXO * Duck shoot * The frog flies * Pong * Cat and mouse * The beetle and the bee
Rock fall * Four in a row * Sow grow * Choose or lose * Mix and match
Latest leaderboard entries: UXO
How to play UXO to practice
'3-digit number plus multiple of 10' for 2nd grade
UXO is a "click to clear" game with targets to hit and bombs to avoid.
- In each level of UXO, hit all the target objects.
- You can clear targets by clicking on them or by dragging over them with the mouse down.
- You have 30 seconds in each level to clear the targets.
- There are 10 levels max in the game.
- In the first level there are 10 targets and 5 bombs.
- The number of targets increases by one in each level.
- You get 10 points for each target you hit.
- You lose 5 points for each bomb you hit.
- When you have hit all the targets or 30 seconds have elapsed, you get a math question from your selected topic.
- Answering the question correctly adds 50 points to your score.
- A wrong answer takes 20 points away from your score.
- If you get a question wrong, you can try to answer again.
- Your final score is a combination of your targets score minus your bombs score plus the points you get from the math questions.
- There is a high score leaderboard for each topic.
- The highest possible score for a 10 question topic is 1950.
