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
7 × 10 = ______
90 − 10 = ______
75 + 20 = ______
3 × 10 = ______
62 + 20 = ______
27 − 10 = ______
1 × 10 = ______
40 − 10 = ______
19 + 10 = ______
70 + 20 = ______
60 − 10 = ______
57 + 20 = ______
38 + 10 = ______
2 × 10 = ______
20 + 10 = ______
83 + 20 = ______
33 + 20 = ______
62 − 10 = ______
51 − 10 = ______
6 × 10 = ______
