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
14 + 20 = ______
15 + 10 = ______
47 + 10 = ______
65 + 10 = ______
70 − 10 = ______
1 × 10 = ______
45 + 20 = ______
5 × 10 = ______
44 + 20 = ______
78 − 10 = ______
76 − 10 = ______
88 + 20 = ______
23 − 10 = ______
73 + 10 = ______
58 + 10 = ______
69 − 10 = ______
85 + 20 = ______
52 − 10 = ______
39 − 10 = ______
81 + 20 = ______
