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
3 × 10 = ______
19 + 20 = ______
33 + 20 = ______
1 × 10 = ______
31 + 20 = ______
69 + 10 = ______
88 + 10 = ______
15 + 10 = ______
40 + 10 = ______
74 + 10 = ______
27 − 10 = ______
68 − 10 = ______
36 − 10 = ______
8 × 10 = ______
51 + 20 = ______
2 × 10 = ______
52 + 10 = ______
66 + 10 = ______
61 − 10 = ______
70 − 10 = ______
