Addition
Subtraction
Multiplication
Division
100
189 + 25= =(189+11) + (25 -11) = 200 + 14 = 214 is an example of...
What is "give and take"?
100
Constant difference, removal, adding on
What is subtraction strategies?
100
partial products
What is multiplication strategies?
100
Solve the problem. Model your strategy using an open array. 128 ÷ 4
32
200
1894+ 284= = 1000 + 800 + 90 +4 + 200 + 80 + 4 is an example of...
What is "breaking down, friendly numbers or decomposing"?
200
Model using an open number line how to solve 3012- 3009.
3
200
solve the problem. Use an open array to model your strategy. 96 x 3
288
200
Solve the problem. Model your thinking using an open array. 184 ÷ 4.
46
300
Model using an open number line how to solve 1742 + 873.
2615
300
Model using an open number line how to solve 1984-1901.
83
300
Solve the problem. Use an open array to model your strategy. 783 x 5
3915
300
Use an open aray to model how to solve the problem 176 ÷ 8.
22
400
Model using an open number line how to solve 2085 + 123.
2208
400
Model using an open number line how to solve 23.88-4.93
18.95
400
Solve the problem. Use an open array to model your strategy. 19 x 97
1843
400
solve the problem. Use an open array to model your thinking. 288 ÷ 12.
24
500
Model using an open number line 1095 + 1894
2989
500
Model using an open array how to solve 984 - 29.
955
500
solve the problem below. use an open array to model your strategy. 873 x 34
29,862
500
Solve the problem. Model your strategy using an open array. 954 ÷ 6
159
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