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Grade 4 Math · World 3: Multiplication Mill · Level 26
Multiples of 10, 100, and 1,000
6 × 300 = 6 × 3 × 100.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 26
- To multiply 6 times 300, think of 300 as 3 times 100. So 6 times 300 is 6 times 3 times 100.
- 6 times 3 is 18, and 18 times 100 is 1,800. Use a fact you know, then multiply by 10, 100, or 1,000.
- 30 times 40 is 3 times 10 times 4 times 10. 3 times 4 is 12, and 10 times 10 is 100. So 30 times 40 is 1,200.
- Watch out when the fact has its own zero: 5 times 600 is 5 times 6, which is 30, times 100. That's 3,000!
Georgia's K-12 Mathematics Standards:
- 4.NR.2.3 — Solve relevant problems involving multiplication of a number with up to four digits by a 1-digit whole number or involving multiplication of two two-digit numbers using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.