Add hundreds, tens, and ones using place-value models and strategies.
Add Three-Digit Numbers is the game. Add hundreds, tens, and ones using place-value models and strategies. Watch shows 234 + 125 = 359, then 407 + 162 = 569, then 158 + 267 = 425, then 346 + 185 = 531. Tap the ones, then the tens, then the hundreds. When a place makes 10 or more, tap the gold bundle so it moves to the next place. Try it. Add hundreds, tens, and ones using place-value models and strategies. Then six scored sums. Score, Streak, and hearts start after Try it. Built for 2nd grade.
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How to Play Add Three-Digit Numbers
Watch
Watch. Add hundreds, tens, and ones using place-value models and strategies. 234 + 125 = 359, then 407 + 162 = 569, then 158 + 267 = 425, then 346 + 185 = 531. The ones join first. A gold bundle moves to the next place when a column makes 10 or more.
Try it
Try it. Add hundreds, tens, and ones using place-value models and strategies. Tap the ones, then the tens, then the hundreds. 234 + 125 = 359. 158 + 267 = 425. The sum stays until you go on. The hearts stay hidden through Try it.
Add Three-Digit Numbers
Add Three-Digit Numbers. Add hundreds, tens, and ones using place-value models and strategies. Six new sums. Tap ones, tens, and hundreds. 346 + 185 = 531.
Score
A finished sum adds Score and Streak. A tap in the wrong place 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
Add hundreds, tens, and ones using place-value models and strategies.
Watch. 234 + 125 = 359. 407 + 162 = 569. 158 + 267 = 425. 346 + 185 = 531. Tap the ones, then the tens, then the hundreds. Try it. Add hundreds, tens, and ones using place-value models and strategies.
234 + 125 = 359
4 ones and 5 ones join as 9. 3 tens and 2 tens join as 5. 2 hundreds and 1 hundred join as 3. The sum is 359. No place makes 10.
158 + 267 = 425
8 ones and 7 ones make 15. Tap the gold rod. It moves into the tens, and 5 ones stay. 5 tens, 6 tens, and that rod make 12. Tap the gold flat. It moves into the hundreds, and 2 tens stay. 1 hundred, 2 hundreds, and that flat make 4. The sum is 425.
Score and Streak
Score and Streak wait until after Watch and Try it. A finished sum adds Score and grows the Streak. A tap in the wrong place 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 Add Three-Digit Numbers?
Add Three-Digit Numbers is a 2nd grade game. Add hundreds, tens, and ones using place-value models and strategies. Watch 234 + 125 = 359, 407 + 162 = 569, 158 + 267 = 425, and 346 + 185 = 531. Try it. The blocks join place by place.
Why Play Add Three-Digit Numbers?
Hundreds, tens, and ones
Add hundreds, tens, and ones using place-value models and strategies. Flats, rods, and squares show each place.
234 + 125 = 359
234 + 125 = 359 needs no trade. 158 + 267 = 425 and 346 + 185 = 531 trade a gold bundle into the next place.
A miss you can feel
A tap in the wrong place shakes the board and puts the blocks back. A finished sum adds Score.
Frequently Asked Questions
How do I add hundreds, tens, and ones using place-value models and strategies?
Watch 234 + 125 = 359, 407 + 162 = 569, 158 + 267 = 425, and 346 + 185 = 531. Then Try it. Tap the ones, then the tens, then the hundreds. Tap the gold bundle when a place makes 10 or more.
What is 234 + 125?
359. 4 ones and 5 ones make 9. 3 tens and 2 tens make 5. 2 hundreds and 1 hundred make 3.
What is 158 + 267?
425. 8 ones and 7 ones make 15, so a gold rod moves into the tens. 5 tens and 6 tens and that rod make 12, so a gold flat moves into the hundreds. The hundreds make 4.
What is 346 + 185?
531. 6 ones and 5 ones make 11. 4 tens and 8 tens and the extra ten make 13. The hundreds make 5.
How does Score work?
Score and Streak start after Watch and Try it. A finished sum adds Score. The Streak makes the next sum worth more. A tap in the wrong place 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 Add Three-Digit Numbers for?
Add Three-Digit Numbers is for 2nd grade. Add hundreds, tens, and ones using place-value models and strategies.