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
24 + 20 = ______
47 + 20 = ______
46 + 10 = ______
40 + 20 = ______
8 × 10 = ______
28 + 10 = ______
5 × 10 = ______
14 + 10 = ______
98 − 10 = ______
81 + 10 = ______
1 × 10 = ______
73 − 10 = ______
69 − 10 = ______
45 + 20 = ______
32 + 10 = ______
39 + 20 = ______
21 − 10 = ______
22 + 10 = ______
34 − 10 = ______
86 + 20 = ______
