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 + 20 = ______
87 + 10 = ______
80 + 10 = ______
4 × 10 = ______
8 × 10 = ______
2 × 10 = ______
62 + 10 = ______
1 × 10 = ______
60 + 20 = ______
44 − 10 = ______
21 − 10 = ______
36 + 20 = ______
46 − 10 = ______
22 + 20 = ______
85 + 10 = ______
29 − 10 = ______
29 + 20 = ______
84 + 20 = ______
80 − 10 = ______
23 + 10 = ______
