MATHS REVISION (MIDTERM ASSESSMENT)

Complete the pattern: 65, 75, 85, , , ,

Answer explanation

The pattern increases by 10 each time: 65 + 10 = 75, 75 + 10 = 85. Continuing this, 85 + 10 = 95, 95 + 10 = 105, and 105 + 10 = 115. Thus, the complete pattern is 65, 75, 85, 95, 105, 115.

Complete the pattern: 427, 527, 627, , , ,

Answer explanation

The pattern increases by 100 each time: 427, 527, 627. Continuing this, the next numbers are 727, 827, and 927.

Complete the pattern: 281, 291, 301 , - , - , -

(a)  

Answer explanation

The pattern increases by 10 each time: 281, 291, 301. Continuing this, the next numbers are 311, 321, and 331. Thus, the complete pattern is 281, 291, 301, 311, 321, 331.

Sort the following numbers into a Caroll diagram: 209, 170, 186, 204, 307, 104

Answer explanation

To sort the numbers into a Caroll diagram, categorize them based on whether they are greater than or less than 200. The numbers less than 200 are 104, 170, 186; those greater than 200 are 204, 209, 307.

Circle the correct estimate of the following by giving the range. 78 cars

• 50 - 60

• 60 - 70

• 70 - 80

Answer explanation

The estimate of 78 cars falls within the range of 70 to 80. This range accurately captures the value, while the other options (50-60 and 60-70) are too low.

Circle the correct estimate of the following by giving the range. 189 toys

• 100 - 180

• 180 - 190

• 200 - 250

Answer explanation

The number 189 falls within the range of 180 to 190, making '180 - 190' the correct estimate. The other ranges do not include 189.

Circle the correct estimate of the following by giving the range. 338 flowers

• 330 - 340

• 320 - 330

• 310 - 320

Answer explanation

The number 338 is closest to the range 330 - 340. This range includes 338, making it the correct estimate. The other ranges do not encompass 338.

Estimate the following by describing it in a range: Count on by 2s starting from 17. Write the first five numbers.

Answer explanation

Starting from 17 and counting by 2s gives: 17, 19, 21, 23, 25. The first five numbers in this sequence are 17, 19, 21, 23, and 25.

If Jona steps back by 4 from 120, what is the third term?

Answer explanation

Jona steps back 4 from 120, resulting in 116. The third term in this context is simply the result of this operation, which is 116.

If Andrew counts on by 3 from 78, what is the 5th number?

Answer explanation

Starting from 78, counting on by 3 gives: 78, 81, 84, 87, 90. The 5th number is 90.