Standard Algorithm
Subtract in Parts
How many steps?
Story Problems
Wild Card
100
Use the standard algorithm to solve: 34,543 - 12,569
21,974
100
Subtract in parts: 7,893 - 382
7,893 - 300.... 7,593 - 80.... 7,513 - 2 = 7,511
100
Start at 852. How many steps to 10,000?
9,148 steps
100
A golf course driving range goes through 1,211 golf balls a week. If I hit 763 golf balls this week, how many golf balls will there be left for other people to hit?
448 golf balls
100
Solve using the standard algorithm: 34,567 - 26,874
7,693
200
Use the standard algorithm to solve: 43,702 - 38,394
5,308
200
Subtract in parts: 7,631 - 3,784
7,631 - 3,000.... 4,631 - 700.... 3,931 - 80.... 3,851 - 4 = 3,847
200
Start at 6,105. How many steps to 10,000?
3,895 steps
200
A mail sorting machine can make 10,920 pencils in one minute. I sold 4,578 of those pencils to a teacher. How many pencils were left over?
6,342 pencils
200
A gas station sells 7,344 gallons of gas in 24 hours. After 5 hours 1,468 gallons of gas have been sold. How many more gallons will be sold that day?
5,876 gallons of gas
300
Use the standard algorithm to solve: 89,005 - 52,851
36,154
300
Subtract in parts: 11,296 - 4,637
11,296 - 4,000.... 7,296 - 600.... 6,696 - 30.... 6,666 - 7 = 6,659
300
Start at 7,001. How many steps to 20,000?
12,999 steps
300
A school district ordered 56,789 sheets of paper for its printers. Our school used 13,567 pieces of the paper, how many sheets of paper are left for the other schools in the district?
43,222 sheets of paper
300
Start at 45,671. How many steps to 100,000?
54,329 steps
400
Use the standard algorithm to solve: 98,621 - 19,725
78,896
400
Subtract in parts: 34,047 - 23,935
34,047 - 20,000.... 14,047 - 3,000.... 11,047 - 900.... 10,147 - 30.... 10,117 - 5 = 10,112
400
Start at 12,457. How many steps to 50,000?
37,543 steps
400
A farmer has multiple fields of corn. He counted 89,461 rows of corn, but there was a drought and several of his fields died. He lost 37,953 rows of corn. How many rows does he have left?
51,508 rows of corn left
400
What did I recently buy for my new apartment?
A COUCH!
500
Use the standard algorithm to solve: 178,947 - 93,672
85,275
500
Subtract in parts: 189,567 - 124,472
189,567 - 100,000.... 89,567 - 20,000.... 69,567 - 4,000.... 65,567 - 400.... 65,167 - 70.... 65,097 - 2 = 65,095
500
Start at 78,549. How many steps to 200,000?
121,451 steps
500
Each month the gumball machine dispenses 21,793 gumballs. If we check the machine halfway through the month and there are 10,896 left in the machine, how many have been dispensed so far this month?
10,897 gumballs
500
What are you most looking forward to over spring break?
I can't wait to sleep in!!
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