Math problem set Grade 4 Math

Dunmore Drought Delivery: Division and Leftover Barrels

A grade 4 problem set where a fictional drought town divides water among streets and trucks, finding quotients and interpreting the remainder to plan extra trips.

Objectives

  1. Students will divide up to four-digit totals by one-digit divisors and state the remainder.
  2. Students will interpret a remainder in context to decide how many truck trips are needed.

Vocabulary

Key words: quotient, remainder, divide

Teacher overview

A drought has hit the fictional town of Dunmore, so trucks bring water to homes. This set has students share totals equally by dividing, then decide what a leftover remainder means for the next truck trip, joining the division of 4.NBT.B.6 with the remainder reasoning of 4.OA.A.3. Every problem except problem 5, which builds on problem 4, gives its own numbers so it can stand alone. A common error is to drop the remainder when the situation actually needs one more full trip; problems 4 and 5 are built to correct that.

Answer Key

  1. Answer: 24 jugs. 96 ÷ 4 = 24, with no remainder.
  2. Answer: 62 jugs. 372 ÷ 6 = 62, with no remainder.
  3. Answer: 162 gallons. 1,458 ÷ 9 = 162, with no remainder.
  4. Answer: 6 full loads, 2 barrels left over. 50 ÷ 8 = 6 remainder 2, since 8 × 6 = 48 and 50 − 48 = 2.
  5. Answer: 7 trips. The 6 full loads carry 48 barrels, and the 2 leftover barrels need one more trip, so 6 + 1 = 7 trips.
  6. Answer: 49 boxes, 0 left over. 245 ÷ 5 = 49 with no remainder.
  7. Answer: 125 liters, 0 left over. 1,000 ÷ 8 = 125 with no remainder.
  8. Answer: 122 gallons, 1 left over. 733 ÷ 6 = 122 remainder 1, since 6 × 122 = 732 and 733 − 732 = 1.
  9. Answer: Yes. 6 × 120 = 720, which is close to 733, so about 120 is a good estimate; the exact answer is 122 remainder 1.

Differentiation

Support

Give students base-ten blocks or a place-value chart to share the hundreds, tens, and ones one place at a time. Start with problems 1 and 2, which divide evenly, before the remainder problems. Provide the multiplication facts for the divisor so students can check each quotient.

Extension

Ask students to write their own delivery problem where a truck holds 8 barrels and the town must move a number of barrels that leaves a remainder of 3, then solve it and explain how many trips are needed.

ELL supports

Draw trucks and barrels so students can act out problem 4 by circling groups of 8. Provide a sentence frame: "There are ___ full loads and ___ left over, so the town needs ___ trips."