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1a.
Hint:
The expressions have only addition and/or subtraction. Calculate from left to right.
100 + 50 – 2 = – 2 =
1b.
100 – 50 + 2 = + 2 =
1c.
Hint:
The expressions have only multiplication and/or division. Calculate from left to right.
10 × 5 ÷ 2 =
1d.
10 ÷ 5 × 2 =
1e.
Hint:
The expressions have multiplication or division as well as addition and/or subtraction. Multiply or divide first.
100 – 50 × 2 = 100 – =
1f.
100 + 50 ÷ 2 = 100 + =
1g.
56 – 8 × 5 + 12 = 56 – +12 = + 12 =
2a.
40 + 3 × 7 =
2b.
50 + 20 ÷ 4 =
2c.
3 × 50 + 4 × 30 =
2d.
60 ÷ 5 – 15 ÷ 5 =
2e.
96 ÷ 8 – 6 × 2 =
2f.
22 + 8 ÷ 2 – 2 =
3. Write a math expression without parentheses that shows all the steps you used in finding the total number of colored dots in this figure, and then show how to find the value
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