Multiples of 10, 100, 1,000
Solve:
4x400
1600
What does 6,785 round to?
7,000
Use base ten blocks to solve:
3x22
3x22=66
Draw an Area Model to solve:
4x36
4x36 = 144
3x23
3x23=69
Solve:
3x30 =
90
If you round up, your estimated answer will be (greater or less) than your actual answer?
greater
Use base ten blocks to solve:
4x22
4x22 = 88
Why do we make Area Models?
To help us multiply and split the two digit number into tens and ones and then multiply
4x12
4x12=48
Solve:
4x500=
2000
Round and find the estimated answer of:
8 x 2,438
8 x 2,000 = 16,000
Use base ten blocks to solve:
4x63 =
4x63 = 252
We can make an Area Model with this equation:
3x127
Yes! You can!!!
4x27
4x27=108
How many zeros does the answer to 5x600 have?
3 zeros
Round and find the estimated answer:
5 x 5,786 =
5 x 6,000 = 30,000
Use base ten blocks to solve:
4x50
4x50 = 200
How do you split 127 into hundreds, tens, and ones?
100, 20, 7
5x38
5x38=190
Solve 70x40
2800
4 x 3,587 =
Is your estimated answer greater or less than the actual answer? Why?
4 x 4,000 = 16,000
greater than because you rounded up to 4,000
Use base ten blocks to solve:
6x26
6x26=156
Use an Area Model to solve:
3x127
3x127=381
7x67
7x67=469