Q1.
The donations are shown in the table below. Write the number in each case. — Rice, shown as 3 rods of ten and 9 single blocks.
| Donations | Quantity | Number |
|---|---|---|
| Rice | ? |
Answer The rice donation, shown with Dienes blocks.
Count the rods first, then the single blocks.
3 rods of ten = 3 Tens = 30
9 single blocks = 9 Ones = 9
30 + 9 = 39
Number = 39
9 single blocks = 9 Ones = 9
30 + 9 = 39
Number = 39
Why it happens: each rod is 10 blocks joined together, so 3 rods mean 3 tens, and the loose blocks are just ones.