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
79 + 10 = ______
74 + 10 = ______
25 + 10 = ______
67 + 20 = ______
6 × 10 = ______
19 + 20 = ______
81 + 20 = ______
4 × 10 = ______
70 − 10 = ______
9 × 10 = ______
33 − 10 = ______
30 + 10 = ______
52 + 20 = ______
20 + 20 = ______
87 + 20 = ______
94 − 10 = ______
45 − 10 = ______
69 − 10 = ______
97 − 10 = ______
18 + 10 = ______
