Expanded Form
What is the expanded form of this number:
345
300+40+5
In what place value column do you start to add in?
You start in the ones place.
Finish the poem by filling in the blanks.
Adds up to 9 ___________!
____________ the extra next door!
Adds up to 9 everything’s fine!
10 or more take the extra next door!
Use the expanded form strategy to solve:
231+267
231 --> 200+30+1
+267 --> 200+60+7
400+90+8 = 498
Use the standard algorithm to solve the problem:
312+657
312
+657
969
Use the base ten blocks strategy to solve the problem:
872+105
*Written vertically
*HTO chart drawn
*Answer: 977
Use the standard algorithm to solve the problem:
546+436
1
546
+436
982
Use the expanded form strategy to solve:
516+312
516 --> 500+10+6
+312 --> 300+10+2
800+20+8 = 828
Use the standard algorithm to solve the problem:
402+280
402
+280
682
Use the base ten blocks strategy to solve the problem:
449+430
*Written vertically
*HTO chart drawn
*Answer: 879
Use the standard algorithm to solve the problem:
155+238
1
155
+238
393
Use the expanded form strategy to solve:
447+411
447 --> 400+40+7
+411 --> 400+10+1
800+50+8 = 858
Use the standard algorithm to solve the problem:
868+91
868
+ 91
959
Use the base ten blocks strategy to solve this problem:
112+221
*Written vertically
*HTO chart drawn
*Answer: 333
Use the standard algorithm to solve:
589+243
11
589
+243
832
Use the expanded form strategy to solve:
230+413+154
230 --> 200+30+0
+413 --> 400+10+3
+154 --> 100+50+4
700+90+7 = 797
Use the standard algorithm strategy to solve this problem:
345+112+232
345
+112
+232
689
Use the base ten blocks strategy to solve the problem:
525+340
*Written vertically
*HTO chart drawn
*Answer: 865
Use the standard algorithm to solve:
289+343+214
11
289
+343
+214
846