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SOW GROW
PLAY
Look at and listen to each math question. Click/tap on the pot that has the right answer. Expand answers if necessary using the magnifying glass buttons.
Correct answers water the seedling which grows, blooms and the flower is cut for the vase. Continue until you have collected the given number of flowers.
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Game: SOW GROW

Aim: To grow and gather sunflowers

Method:
Look at and listen to each math question. Click/tap on the pot that has the right answer. Expand answers if necessary using the magnifying glass buttons.
Correct answers water the seedling which grows, blooms and the flower is cut for the vase. Continue until you have collected the given number of flowers.

3-digit number plus multiple of 10
      
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SOW GROW game to practice
'3-digit number plus multiple of 10' for 2nd grade

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 Sow grow 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.

Match math questions to the right answer to grow flowers...relaxed game with nice outcome

Large thumbnail for math game Sow grow

Sow grow is a gentle game that concentrates on your ability to answer math questions. The game itself is very simple to play and does not require manual dexterity or fast reaction times. You are growing sunflowers in pots on a window sill. When you answer questions correctly you get to pick a sunflower to put in the vase. When the vase is full, you have completed the game.

Notes

  1. Sow grow is a one player game to learn or revise math.
  2. Sow grow is a timed game - play a few times, set a personal best time and try to get on the leaderboard!
  3. It is best to go through the sample questions in the topic lesson before you attempt this game.
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How to play Sow grow to practice
'3-digit number plus multiple of 10' for 2nd grade

Free Math Games screenshot of Sow grow game for learning and practicing elementary math

  1. Select the Sow grow game from the "Games" selection page.
  2. On the settings page there are brief instructions on how to play.
  3. Click on PLAY to start the game.
  4. The game is timed - the clock starts when you enter the play screen.
  5. The first seeds are planted then the first math question is revealed above the pots.
  6. If you have robot speech enabled, the robot voice will speak the question.
  7. Click / tap on the speaker button at top right if you want to hear the audio repeated.
  8. Click / tap on the question box to expand the question and hear the audio repeated.
  9. Click / tap on the pot that correctly answers the question.
  10. If your answer is correct the seedling will grow into a flower which is then cut and put in the vase.
  11. If your answer is wrong, the audio will play again, and an arrow will indicate the correct answer. Click the close button at top right to continue.
  12. The number of questions you need to answer is in the count box at top right above the clock.
  13. There are occasional "flower bonuses" available which will take 5 seconds off your time.
  14. A leaderboard records the 10 fastest times for each topic. Click the gold star on the vase to see the leaderboard.
  15. If you get one of the 10 fastest times, you are offered the chance to enter your name into the leaderboard, or you can cancel if you are not interested.
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