Page 14 - Genius PBD - Mathematics Year 4

Date: Mathematics Year 4 Unit 1 Numbers and Operations

PBD MODULE 1.3 Estimation Textbook pages: 13 – 14

LS 1.3.1 Give reasonable estimates for the quantity based on the given reference set and justify the answers.

18. Estimate. LS 1.3.1 PL 3

(a) Estimate the number of marbles in (b) Estimate the volume of water in
jar B. bottle Q.
i-THINK Map

Jar A Jar B Bottle P Bottle Q
100 marbles 1 litre
Estimation of the number of marbles Estimation of the volume of water in

in jar B is . bottle Q is .

PBD MODULE 1.4 Round off numbers Textbook pages: 15 – 17
LS 1.4.1 Round off whole numbers to the nearest ten thousands.

19. Complete. LS 1.4.1 PL 3 Bridge Map
(a) Round off to the
nearest hundred
becomes 5 679 12 347 52 091
as as
Relating factor

(b) Round off to the
nearest thousand
becomes 5 697 12 486 RM56 904
as as
Relating factor

20. Round off. LS 1.4.1 PL 3
nearest nearest nearest nearest ten
Number
tens hundreds thousands thousands
(a) 43 651

(b) 97 126

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01 Genius PBD Maths Yr4.indd 7 27/10/2022 11:33 AM