ems013 Pause the following slides to solve each problem. Then, continue the slideshow to see how each problem is solved, and the answer.
ems013 315 + 189 = ?
ems013 648 + 391 =
ems013 Great Work!
Keep practicing how to decompose!
ems013 Are you ready to solve a few problems using this strategy?
ems013 How can you break apart the number 235?
ems013 Try using mental math to solve these problems!
ems013 Do you have to break apart both numbers when decomposing?
ems013 Can you decompose numbers to subtract, too?
ems013 Write the equation horizontally, so you can use the space below.
ems013 Break apart one or both numbers into ones, tens and hundreds.
ems013 Then, add together the ones, tens and then the hundreds.
ems013 Next, find the total of all the ones, tens and hundreds
ems013 Since you separated each of the addends, now it's time to put them back together!
ems013 Add the three numbers to get the total sum!
ems013 Step 1: Write the equation horizontally.
ems013 Step 2: Separate each number into ones, tens and hundreds (hint- think about expanded form).
ems013 Step 3- Find the sum of each place (add the ones, tens and the hundreds).
ems013 You can use any strategy!
ems013 Step 4: Add together the sum of each place.
ems013 That's how to decompose!