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
69 − 10 = ______
52 + 20 = ______
72 + 20 = ______
4 × 10 = ______
29 + 20 = ______
66 − 10 = ______
84 + 10 = ______
89 + 10 = ______
51 − 10 = ______
63 − 10 = ______
9 × 10 = ______
5 × 10 = ______
84 + 20 = ______
44 − 10 = ______
46 + 20 = ______
54 + 10 = ______
37 − 10 = ______
6 × 10 = ______
51 + 20 = ______
29 + 10 = ______
