WALT: Add and subtract using place value partitioning.
342 is written in a place value chart like this.
Thousands | Hundreds | Tens | Ones |
| 3 | 4 | 2 |
The value of the 3 is 3 hundreds or 300
the 4 is 4 tens or 40
the 2 is 2 ones or 2.
These all show 342
342 can be expanded as either
300 + 40 + 2 �or �3 hundreds + 4 tens + 2 ones.
Copy slide 2 to show the number below - duplicate the blocks and money
672 is written in a place value chart like this.
Thousands | Hundreds | Tens | Ones |
| | | |
The value of the
the
the
These all show 672
672 can be expanded as either
→�or �→
Copy slide 2 to show the number below - duplicate the blocks and money
397 is written in a place value chart like this.
Thousands | Hundreds | Tens | Ones |
| | | |
The value of the
the
the
These all show 397
397 can be expanded as either
→�or �→
Use place value blocks to show and solve the addition problem:
12 + 18
12
+
18
=
Use place value blocks to show and solve the addition problem:
25 + 32
25
+
32
=
Use place value blocks to show and solve the addition problem:
149 + 173
149
+
173
=
Use place value blocks to show and solve the addition problem:
123 + 243
123
+
243
=
Use place value blocks to show and solve the addition problem:
20 - 11
20
+
11
=
Use place value blocks to show and solve the addition problem:
29 + 14
29
-
14
=
Use place value blocks to show and solve the addition problem:
179 + 23
179
+
23
=
Use place value blocks to show and solve the addition problem:
123 + 12
123
-
12
=