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Lesson Menu Five-Minute Check (over Lesson 4–3) Main Idea Example 1:Divide by a Two-Digit Number Example 2:Division with a Remainder Example 3:Divide by Two-Digit Numbers
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Main Idea/Vocabulary I will divide up to a three-digit number by a two-digit number.
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Example 1 Divide by a Two-Digit Number How many cartons are needed to hold 384 eggs if each carton holds 12 eggs? Find 12 384. Estimate 384 ÷ 12 400 ÷ 10 = 40
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Example 1 Divide by a Two-Digit Number Step 1 Divide the tens. Divide: 38 ÷ 12 Multiply: 3 × 12 Subtract: 38 – 36 Compare: 2 < 12 12384 – 36 2 Step 2 Divide the ones. Bring down the ones. Divide: 24 ÷ 12 Multiply: 2 × 12 Subtract: 24 – 24 4 12384 – 36 2 33 – 24 0 Compare: 0 < 12 2 Answer: So, 32 cartons are needed to hold 384 eggs. Since 32 is close to the estimate, the answer is reasonable.
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1.A 2.B 3.C 4.D Example 1 A.38 crates B.41 crates C.45 crates D.51 crates How many crates are needed to hold 984 cartons of milk if each crate holds 24 cartons?
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Example 2 Division with a Remainder Find 764 ÷ 40. Step 1 Divide the tens. Divide: 76 ÷ 40 Multiply: 1 × 40 Subtract: 76 – 40 Compare: 36 < 40 40764 – 40 36 Step 2 Divide the ones. Bring down the ones. Divide: 364 ÷ 40 Multiply: 9 × 40 Subtract: 364 – 360 4 40764 – 40 36 11 – 360 4 Compare: 4 < 40 9 Estimate 764 ÷ 40 800 ÷ 40 = 20 R4
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Example 2 Division with a Remainder Answer: So, 764 ÷ 40 is 19 R4.
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1.A 2.B 3.C 4.D Example 2 A.28 R12 B.30 R11 C.32 R12 D.35 R8 Find 852 ÷ 30.
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Example 3 Divide by Two-Digit Numbers Duena worked at the library 312 hours last year. If she worked the same number of hours each month, how many hours did she work each month? To solve, find 312 ÷ 12. 1 year = 12 months Estimate 312 ÷ 12 300 ÷ 10 = 30
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Example 3 Divide by Two-Digit Numbers Step 1 Divide the tens. Divide: 31 ÷ 12 Multiply: 2 × 12 Subtract: 31 – 24 Compare: 7 < 12 12312 – 24 7 Step 2 Divide the ones. Bring down the ones. Divide: 72 ÷ 12 Multiply: 6 × 12 Subtract: 72 – 72 2 12312 – 24 7 22 – 72 0 Compare: 0 < 12 6 Answer: So, Duena worked at the library 26 hours each month.
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1.A 2.B 3.C 4.D Example 3 A.26 B.31 C.36 D.41 Find 540 ÷ 15.
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End of the Lesson End Lesson
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Resources Five-Minute Check (over Lesson 4–3) Image Bank Math Tool Chest Interpret the Remainder
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1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 4–3) A.28 B.32 C.35 D.29
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1.A 2.B 3.C 4.D Five Minute Check 2 (over Lesson 4–3) A.154 B.145 C.245 D.152
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1.A 2.B 3.C 4.D Five Minute Check 3 (over Lesson 4–3) A.64 B.72 C.71 D.65
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1.A 2.B 3.C 4.D Five Minute Check 4 (over Lesson 4–3) A.64 R4 B.64 R2 C.64 R3 D.63 R2
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1.A 2.B 3.C 4.D Five Minute Check 5 (over Lesson 4–3) A.226 B.227 C.228 D.229 Find 912 ÷ 4.
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1.A 2.B 3.C 4.D Five Minute Check 6 (over Lesson 4–3) A.21 R4 B.22 R2 C.23 D.24 Find 168 ÷ 7.
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1.A 2.B 3.C 4.D Five Minute Check 7 (over Lesson 4–3) A.95 R2 B.96 R1 C.96 R2 D.97 R1 Find 577 ÷ 6.
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1.A 2.B 3.C 4.D Five Minute Check 8 (over Lesson 4–3) A.111 R2 B.111 R4 C.112 R2 D.112 R4 Find 892 ÷ 8.
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