**Topic: Number and Operations >> Chooses, describes and explains estimation strategies used to determine the reasonableness of solutions to real-world problems.**

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289 elementary school students and 120 middle school students wrote letters for a time capsule. Estimate the total number of letters written. | View Details |

A florist sells roses, sunflowers, and tulips. He has | View Details |

A school planned to take its 573 students for an excursion. 269 out of them were not interested in the place and so they dropped. About how many students went to excursion? | View Details |

Amy had 287 photos in one book and 114 photos in another. Estimate the total number of photos that Amy had. | View Details |

Amy has collected 831 marbles. If she wants to collect 1,000 marbles, estimate how many more marbles she needs to collect. | View Details |

Andy has 1,997 football cards. Joseph has 1,643 cards. About how many more cards does Andy have? | View Details |

Andy scored 282 in a test and Matt scored 314 in the same test. About how much did Matt score more than Andy? | View Details |

Ashley has 156 candies. She gave 79 to her brother. About how many candies does she have? | View Details |

Chris on his visit to a safari saw 875 deer and 526 monkeys. Estimate the number of animals that Chris saw. | View Details |

Eric wants to go to his Aunt's house which is located 1,000 km away from his house. Estimate the distance Eric has to cover, if he already had traveled 560 km. | View Details |

Gary deposited $812 in his account. Two days later, he depositied again $582. Estimate the final amount in his account. Round it to the nearest hundred. | View Details |

In a school, there are 349 girls and 252 boys. About how many students are there in the school? | View Details |

Jacques has saved $635. If he wants to save $1,000, estimate how much more he still has to save. | View Details |

Jerald deposited | View Details |

Jim bought 12 apples for $51 and 4 oranges for $19. Estimate the money he spent. | View Details |

Jim had $202. He spent $183 for shopping. Estimate the amount left with him. [Round to the nearest ten.] | View Details |

Jim had 213 marbles. He gave 88 marbles to his sister Ashley. Rounding to the nearest ten, find out about how many marbles is Jim left with. | View Details |

Jimmy had 186 chocolates. He distributed 112 of them. Estimate the number of chocolates he has now. | View Details |

John collected 34 pens and Edward collected 58 pens. About how many did they collect altogether? | View Details |

John had 28 chocolates. He gave 12 to his friend. About how many chocolates is John left with now? | View Details |

John had 37 marbles. He gave 11 to his friend. About how many marbles did he have then? | View Details |

John had 47 marbles. He gave 12 to his friend. About how many marbles did he have then? | View Details |

John scored 423 points and his brother scored 326 points. About how many more points did John score? | View Details |

Johnson traveled 215 miles on Monday and 305 miles the next day. Estimate the total distance he traveled to the nearest hundred. | View Details |

Josh and his wife together earn $9,635 and spend $4,385 every month. By estimating the amount of money they earn and spend each month to the nearest thousand, how much will they save every month. | View Details |

Kenny deposited $8,736 in a bank. He withdrew $5,124. By estimating the amounts of money he deposited and withdrew, to the nearest thousand, find how much he would have left in the bank. | View Details |

Lisa wants to buy a doll which costs $1,000. If she has $890, estimate the amount she still needs to buy the doll. | View Details |

Marv has collected $870 for a relief fund. If he wants to collect $1,000, then estimate the amount he still needs to collect. | View Details |

Matt counted the number of girls and boys in his school. There are 835 boys and 684 girls. Estimate the total number of students. | View Details |

Nathan deposited $423 in his bank account last month and he deposited $978 this month. Estimate the total amount that Nathan deposited. | View Details |

Paula gave $472 to Rachel and $318 to John. Estimate the total amount that Paula gave to both Rachel and John. | View Details |

Paula had $93. He gave $37 to Rachel. Estimate the amount left with him. Round to the nearest ten. | View Details |

Sheela has 3 bank accounts. She deposited $1,990 in each account. Estimate the total amount deposited. | View Details |

Sue runs a gift shop. She sold 1,212 balloons last year. This year she sold 2,175 balloons. About how many more balloons did she sell this year? Estimate your answer by rounding it to the nearest hundred. | View Details |

Sue runs a greeting card shop. Last year she sold 1,382 christmas cards. This year she sold 4,897 cards. About how many more cards did she sell this year? | View Details |

The distance between | View Details |

There are | View Details |

Tommy earns | View Details |

Tony deposited $921 and $619 in two banks. Estimate the total amount that he deposited. Round to the nearest hundred. | View Details |

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