Mental Math Masters-Round 1

1. Look at these numbers: 18, 14, 56, 42, 36, 63.

a. Which of these numbers are multiples of 6?

b. Which of these numbers are multiples of 7?

c. Which number is the same as both a and b

Andile writes a number pattern.

Explain the mistake that Andile has made in her sequence. 50, 45, 40, 30, 25, 20.

Tick the numbers which have the same value as 3560.

• 3 thousands, 5 hundreds and 6 tens

• 35 tens and 6 ones

• 3 thousands and 56 ones

• 356 tens

Complete the rounding statements.

a. 8995 rounded to the nearest 10 is ________

b. 7520 rounded to the nearest ______ is 8000.

c. 6550 rounded to the nearest 100 is ______

d. 4765 rounded to the nearest ______ is 4770.

Complete these number sequence

9, 18,____ ,____ , 45,____

Use <, > or = to compare

8 + 4000 + 10 + 900 ____ 4010+909

• <

• >

• =

Put these numbers in order from least to greatest value by ordering the letters correctly.

A = 7653 B = 8742 C = 8924 D = 7563 E = 8724

• B, E, A, D, C

• A, C, E, B, D

• C, D, A, E, B

• D, A, E, B, C

Arrange the following numbers in ascending order by correctly ordering the letters.

A = 2356 B = 3265 C = 2536 D = 3625 E = 2563

• A, C, E, B, D

• B, D, A, E, C

• C, E, A, D, B

• D, A, E, B, C

Identify the numbers that are equivalent to 4870.

• 4 thousands, 8 hundreds and 7 tens

• 48 tens and 70 ones

• 4 thousands and 870 ones

• 487 tens

Compare using <, > or =

7 + 2000 + 30 + 600 ____ 2030+607

• <

• >

• =