Math 1A Workbook Exercise 59-61 Singapore Part 18

1A Workbook Exercise 59-61

Exercise 59

 

1. Write heavier than, as heavy as or lighter than.

(a) The papaya is _______ the pineapple.

(b) The crab is _______ the fish.

(c) The pencil box is _______ the mug.

Solution:

(a) as heavy as

(b) heavier than

(c) lighter than

 

2.

(a) Get these 2 (two) things: pencil-✐, ruler-📏.

⚖

use a balance to compare their weights and fill in the blanks.

The _______ is heavier than the ______.

Solution:

Ruler, Pencil [Try yourself, it may vary for you.]

 

(b) Get these 3 (three) things: toy car-🚙, pencil box-🖃, doll-💃.

use a balance to compare their weights and fill in the blanks.

The _______ is the heaviest.

The _______ is the lightest.

Solution:

doll, pencil box [Try yourself, it may vary for you.]

 

Exercise 60

 

1. Look at the below picture and fill in the blanks.

(a) The key weighs ______ units.

(b) The pear weighs ______ units.

(c) The book weighs ______ units.

Solution:

(a) 7

(b) 9

(c) 3

 

2. Look at the below picture and fill in the blanks.

(a) The weight of the toothbrush is _______ units.

(b) The weight of the eraser is ______ units.

Solution:

(a) 5

(b) 4

 

3. use 🧷 as 1 unit.

Estimate and then weigh your own ruler.

Now fill in the blank.

My ruler weighs about ______ units.

Solution:

20 [Try yourself, it may vary for you.]

 

Exercise 61

 

1. Use ⦻ as 1 unit.

(a) The papaya weighs ________ units.

(b) The watermelon weighs ________ units.

(c) The pineapple weighs _______ units.

(d) The ________ is the heaviest.

(e) The ________ is the lightest.

(f) The pineapple is lighter than the ________.

Solution:

(a) 7

(b) 9

(c) 8

(d) watermelon

(e) papaya

(f) watermelon

 

2. Use ⭘ as 1 unit.

(a) Box A weighs ________ units.

(b) Box B weighs _______ units.

(c) Box C weighs ________ units.

(d) Box A is heavier than Box _______.

(e) Box ________ is the lightest.

(f) Box ________ is the heaviest.

Solution:

(a) 6

(b) 11

(c) 5

(d) C

(e) C

(f) B