Matemáticas mentales Worksheet
Recommended for 1er grado — 5to grado
Matemáticas mentales Worksheet
Name: ____________________Date: ____________
Instructions: Usar estrategias mentales como sumar diez, duplicar y compensar para calcular rápidamente.
20 problems
27 − 10 = ______
9 × 10 = ______
43 − 10 = ______
3 × 10 = ______
42 − 10 = ______
7 × 10 = ______
5 × 10 = ______
11 + 10 = ______
38 + 10 = ______
52 + 10 = ______
41 + 10 = ______
58 + 10 = ______
85 + 10 = ______
6 × 10 = ______
22 + 20 = ______
11 + 20 = ______
47 + 20 = ______
79 + 20 = ______
87 − 10 = ______
47 − 10 = ______
