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
8 × 10 = ______
2 × 10 = ______
1 × 10 = ______
70 + 10 = ______
3 × 10 = ______
46 − 10 = ______
5 × 10 = ______
70 − 10 = ______
45 + 20 = ______
68 + 20 = ______
9 × 10 = ______
86 + 20 = ______
79 − 10 = ______
7 × 10 = ______
34 − 10 = ______
67 − 10 = ______
51 + 10 = ______
87 + 20 = ______
28 + 10 = ______
64 + 20 = ______
