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
84 + 20 = ______
8 × 10 = ______
33 + 10 = ______
45 + 10 = ______
20 + 10 = ______
63 − 10 = ______
29 − 10 = ______
2 × 10 = ______
98 − 10 = ______
32 + 20 = ______
11 + 20 = ______
75 − 10 = ______
51 + 10 = ______
49 + 20 = ______
58 − 10 = ______
80 + 20 = ______
29 + 20 = ______
3 × 10 = ______
94 − 10 = ______
81 − 10 = ______
