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
74 + 20 = ______
79 − 10 = ______
1 × 10 = ______
6 × 10 = ______
37 − 10 = ______
20 + 10 = ______
56 + 20 = ______
45 − 10 = ______
7 × 10 = ______
73 − 10 = ______
40 − 10 = ______
33 + 20 = ______
13 + 10 = ______
19 + 10 = ______
55 + 20 = ______
67 + 10 = ______
68 + 20 = ______
5 × 10 = ______
63 − 10 = ______
65 + 20 = ______
