I can use estimation, mental math, or rounding to decide if a multiplication or division answer makes sense.
Standard cap: 4 - Evaluate and select estimation strategies.
Subskills what students must be able to do
- 1I can estimate a product.
- 2I can estimate a quotient.
- 3I can compare an estimate with an exact answer and explain reasonableness.
Proficiency Scale & ⚓️ Tasks
1 → 4 proficiency scale
“About how much is 198 × 4?”
“About how much is 634 ÷ 6?”
“A student says 26 × 18 = 4,680. Use estimation to decide if this is reasonable and explain.”
“Compare two different estimation strategies for checking 3,842 ÷ 7. Which gives the most useful check and why?”
Pre-Test
Check what students already know2Extra Test Materials (1)
Teach
Lessons and videos that introduce the skill8Engage NY Lesson (7)
Lesson 12 — Two-step word problems
Grade 4 · Module 3 · Topic D · Lesson 12
Lesson 13 — Multi-step word problems
Grade 4 · Module 3 · Topic D · Lesson 13
Lesson 26 — Divide multiples of 10, 100, and 1,000
Grade 4 · Module 3 · Topic G · Lesson 26
Lesson 31 — Interpret division word problems as either number of groups unknown or group size unknown
Grade 4 · Module 3 · Topic G · Lesson 31
Lesson 32 — Finding quotients and remainders to solve one-step division word problems
Grade 4 · Module 3 · Topic G · Lesson 32
Lesson 4 — Patterns when multiplying in arrays and numerically
Grade 4 · Module 3 · Topic B · Lesson 4
Lesson 5 — Multiply multiples of 10, 100, 1,000
Grade 4 · Module 3 · Topic B · Lesson 5