21 P4.AN.JM.17092874
Level 1
How many of the marked angles are less than 90°?
2 m
Estimation of an angle Right angle More than or less than
22 P3.AN.JC.17103034
Level 2
How many angles inside the figure are smaller than a right angle?
2 m
Estimation of an angle More than or less than
23 P6.AN.NK.21060930
Level 1 PSLE
Look at the diagram.
  1. Name the smallest angle.
  2. Name the two angles that are greater than 90°. Give your answers in letters. (Eg a, b)
2 m
Right angle Estimation of an angle More than or less than Min-max
24 P4.AN.JM.17092875
Level 1
How many of the marked angles are more than 90°?
2 m
Estimation of an angle Right angle More than or less than
25 P4.WN.JM.17102207
Level 1
Round off 88 to the nearest ten. Then estimate 88 x 9.
2 m
W Place values W Multiplication & division W Round off Estimation
26 P4.WN.JM.17102208
Level 1
Round off 415 to the nearest hundred. Then estimate 415 x 7.
2 m
W Place values W Multiplication & division W Round off Estimation
27 P4.WN.JM.17102209
Level 1
Give an estimate for 78 x 574 by first rounding the values to the nearest ten.
2 m
W Place values W Multiplication & division W Round off Estimation
28 P4.WN.JM.17102211
Level 1
Estimate the product of 35972 and 63 by first rounding off the bigger number to the nearest thousand and the smaller number to the nearest ten.
2 m
W Place values W Multiplication & division W Round off Estimation
29 P4.WN.JM.17102204
Level 2
Estimate the value of each of the following expressions. Round off the numbers to the nearest hundred before adding or subtracting.

885 + 712 + 499
3 m
W Place values W Addition & subtraction W Round off Estimation
30 P4.WN.JM.17102205
Level 2
Estimate the value of each of the following expressions. Round off the numbers to the nearest hundred before adding or subtracting.

909 + 214 - 687
3 m
W Place values W Addition & subtraction W Round off Estimation

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