Jerry has 2 x 20 = <<2*20=40>>40 dice.

Therefore, they have 20 + 40 = <<20+40=60>>60 dice altogether.

# Answer

60
Question:
Ivan has 20 dice. Jerry has twice as many dice as Ivan. How many dice do they have altogether?
Answer:
Let's think step by step.

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60
Ivan has 20 dice. Jerry has twice as many dice as Ivan. How many dice do they have altogether?
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