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Ad libitum [116K]
2 years ago
11

Tisha tried to evaluate an expression. Here is her work: 490÷729–23 = 490÷499–23 Step 1 = 109–23 Step 2 = 90–23 Step 3 = 883 Ste

p 4 = 264 Step 5 Is Tisha's work correct?
Mathematics
1 answer:
trapecia [35]2 years ago
4 0

Answer:

No, she made mistake from step 3, going to step 4

Step-by-step explanation:

See attachment for complete expression and Tisha's steps

Required

Is she correct?

The steps up to step 3 is correct.

However, going to step 4; she made a mistake

Her expression is:

Step 3: 90 - 2 * 3

The correct step is to multiply 2 by 3 (using BODMAS)

This will give:

90 - 6

84

But instead she evaluated the subtraction first, which is incorrect.

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